USB devices added automatically under Windows XP Mode

Hi!
I'm having some problems running a USB hardlock key over a Windows XP Mode virtual machine.
If I select the hardlock from the list of devices, it works ok and the app that uses the hardlock works great.
But if I try to run the application from the Start menu of the host system (Windows 7) as Windows XP Mode, the application does not detect the USB Hardlock key (though windows 7 does).
As far as I have worked through it, it would work if I could just manage somehow that when running a virtual machine, the USB hardlock key was loaded automatically. I don't need that USB hardlock key for any Windows 7 application.
Any idea?

Thanks a lot for your help.

May be u can try using VMWARE workstation, them more

user friendly on Xp mode.

thanks, jeman.
I was already running a VMWare Workstation 6.5 to do the trick, though it should be easier for non-advanced users (the ones I have to pay tech service) just running a single app from the Start menu than loading a full VM