avec votre aide ça va mieux , voila l'édition du fichier( je mets tout si ça peut vous aider à y voir plus claire):
*************************************************************************************
<?xml version="1.0"?>
<!--
** DO NOT EDIT THIS FILE.
** If you make changes to this file while any VirtualBox related application
** is running, your changes will be overwritten later, without taking effect.
** Use VBoxManage or the VirtualBox Manager GUI to make changes.
-->
<VirtualBox xmlns="
http://www.innotek.de/VirtualBox-settings" version="1.12-linux">
<Machine uuid="{08eb3604-38e4-4abc-8261-02da1fe6faf0}" name="XP" OSType="WindowsXP" snapshotFolder="Snapshots" lastStateChange="2013-01-21T15:29:11Z">
<MediaRegistry>
<HardDisks>
<HardDisk uuid="{b8b47075-1714-4469-81a3-eea083fc0bc8}" location="XP.vdi" format="VDI" type="Normal"/>
</HardDisks>
<DVDImages/>
<FloppyImages/>
</MediaRegistry>
<ExtraData>
<ExtraDataItem name="GUI/LastCloseAction" value="powerOff"/>
<ExtraDataItem name="GUI/LastGuestSizeHint" value="1024,768"/>
<ExtraDataItem name="GUI/LastNormalWindowPosition" value="415,64,1024,813"/>
</ExtraData>
<Hardware version="2">
<CPU count="1" hotplug="false">
<HardwareVirtEx enabled="true" exclusive="true"/>
<HardwareVirtExNestedPaging enabled="true"/>
<HardwareVirtExVPID enabled="true"/>
<PAE enabled="false"/>
<HardwareVirtExLargePages enabled="false"/>
<HardwareVirtForce enabled="false"/>
</CPU>
<Memory RAMSize="997" PageFusion="false"/>
<HID Pointing="USBTablet" Keyboard="PS2Keyboard"/>
<HPET enabled="false"/>
<Chipset type="PIIX3"/>
<Boot>
<Order position="1" device="Floppy"/>
<Order position="2" device="DVD"/>
<Order position="3" device="HardDisk"/>
<Order position="4" device="None"/>
</Boot>
<Display VRAMSize="62" monitorCount="1" accelerate3D="true" accelerate2DVideo="false"/>
<RemoteDisplay enabled="false" authType="Null" authTimeout="5000">
<VRDEProperties>
<Property name="TCP/Ports" value="3389"/>
</VRDEProperties>
</RemoteDisplay>
<BIOS>
<ACPI enabled="true"/>
<IOAPIC enabled="false"/>
<Logo fadeIn="true" fadeOut="true" displayTime="0"/>
<BootMenu mode="MessageAndMenu"/>
<TimeOffset value="0"/>
<PXEDebug enabled="false"/>
</BIOS>
<USBController enabled="true" enabledEhci="false">
<DeviceFilter name="Nouveau filtre 1" active="true"/>
<DeviceFilter name="Verbatim Portable USB 3.0 Drive [0100]" active="true" vendorId="18a5" productId="022e" revision="0100" manufacturer="Verbatim" product="Portable USB 3.0 Drive" serialNumber="200514061804" remote="0"/>
<DeviceFilter name="TomTom ONE XL IQ Route [0001]" active="true" vendorId="1390" productId="0001" revision="0001" manufacturer="TomTom" product="ONE XL IQ Route" serialNumber="RS7349A02509" remote="0"/>
<DeviceFilter name="Apple Inc. iPad [0001]" active="true" vendorId="05ac" productId="12a4" revision="0001" manufacturer="Apple Inc." product="iPad" serialNumber="6e740eb8e8bd6ef1d417759c7f1f4677f8a47a20" remote="0"/>
<DeviceFilter name="Samsung Electronics Wave575 [0400]" active="true" vendorId="04e8" productId="684a" revision="0400" manufacturer="Samsung Electronics" product="Wave575" serialNumber="010600000000000000G" remote="0"/>
</USBController>
<Network>
<Adapter slot="0" enabled="true" MACAddress="080027C1D069" cable="true" speed="0" type="Am79C973">
<DisabledModes/>
<NAT>
<DNS pass-domain="true" use-proxy="false" use-host-resolver="false"/>
<Alias logging="false" proxy-only="false" use-same-ports="false"/>
</NAT>
</Adapter>
<Adapter slot="1" enabled="false" MACAddress="080027A67242" cable="true" speed="0" type="Am79C973">
<DisabledModes>
<NAT>
<DNS pass-domain="true" use-proxy="false" use-host-resolver="false"/>
<Alias logging="false" proxy-only="false" use-same-ports="false"/>
</NAT>
</DisabledModes>
</Adapter>
<Adapter slot="2" enabled="false" MACAddress="0800277F9FC8" cable="true" speed="0" type="Am79C973">
<DisabledModes>
<NAT>
<DNS pass-domain="true" use-proxy="false" use-host-resolver="false"/>
<Alias logging="false" proxy-only="false" use-same-ports="false"/>
</NAT>
</DisabledModes>
</Adapter>
<Adapter slot="3" enabled="false" MACAddress="080027004DEA" cable="true" speed="0" type="Am79C973">
<DisabledModes>
<NAT>
<DNS pass-domain="true" use-proxy="false" use-host-resolver="false"/>
<Alias logging="false" proxy-only="false" use-same-ports="false"/>
</NAT>
</DisabledModes>
</Adapter>
<Adapter slot="4" enabled="false" MACAddress="08002704BA9E" cable="true" speed="0" type="Am79C973">
<DisabledModes>
<NAT>
<DNS pass-domain="true" use-proxy="false" use-host-resolver="false"/>
<Alias logging="false" proxy-only="false" use-same-ports="false"/>
</NAT>
</DisabledModes>
</Adapter>
<Adapter slot="5" enabled="false" MACAddress="08002725E17D" cable="true" speed="0" type="Am79C973">
<DisabledModes>
<NAT>
<DNS pass-domain="true" use-proxy="false" use-host-resolver="false"/>
<Alias logging="false" proxy-only="false" use-same-ports="false"/>
</NAT>
</DisabledModes>
</Adapter>
<Adapter slot="6" enabled="false" MACAddress="080027CCBE80" cable="true" speed="0" type="Am79C973">
<DisabledModes>
<NAT>
<DNS pass-domain="true" use-proxy="false" use-host-resolver="false"/>
<Alias logging="false" proxy-only="false" use-same-ports="false"/>
</NAT>
</DisabledModes>
</Adapter>
<Adapter slot="7" enabled="false" MACAddress="0800277944D9" cable="true" speed="0" type="Am79C973">
<DisabledModes>
<NAT>
<DNS pass-domain="true" use-proxy="false" use-host-resolver="false"/>
<Alias logging="false" proxy-only="false" use-same-ports="false"/>
</NAT>
</DisabledModes>
</Adapter>
</Network>
<UART>
<Port slot="0" enabled="false" IOBase="0x3f8" IRQ="4" hostMode="Disconnected"/>
<Port slot="1" enabled="false" IOBase="0x2f8" IRQ="3" hostMode="Disconnected"/>
</UART>
<LPT>
<Port slot="0" enabled="false" IOBase="0x378" IRQ="4"/>
<Port slot="1" enabled="false" IOBase="0x378" IRQ="4"/>
</LPT>
<AudioAdapter controller="AC97" driver="Pulse" enabled="true"/>
<RTC localOrUTC="local"/>
<SharedFolders/>
<Clipboard mode="Bidirectional"/>
<IO>
<IoCache enabled="true" size="5"/>
<BandwidthGroups/>
</IO>
<HostPci>
<Devices/>
</HostPci>
<Guest memoryBalloonSize="0"/>
<GuestProperties>
<GuestProperty name="/VirtualBox/HostInfo/GUI/LanguageID" value="fr_FR" timestamp="1358778303357669000" flags=""/>
</GuestProperties>
</Hardware>
<StorageControllers>
<StorageController name="Contrôleur IDE" type="PIIX4" PortCount="2" useHostIOCache="true" Bootable="true">
<AttachedDevice type="HardDisk" port="0" device="0">
<Image uuid="{b8b47075-1714-4469-81a3-eea083fc0bc8}"/>
</AttachedDevice>
<AttachedDevice passthrough="false" type="DVD" port="1" device="0">
<HostDrive src="/dev/sr0"/>
</AttachedDevice>
</StorageController>
</StorageControllers>
</Machine>
</VirtualBox>
