what version ??
Windoze 7 Premium is really Windoze 7 BASIC.
Windows 7 Premium will not run most programs written for XP.
You have to use "XP Virtual PC" (64 BIT)
XP Virtual PC will NOT run under Windows 7 Premium.
To run XP programs under Windows 7 you need to upgrade to Windows 7 PROFESSIONAL or ULTIMATE, and then use "XP Virtual PC" emulation.
I have never had any problem running any Ham software or USB drivers in my Windoz 7 Home Premium computer.