Those instructions are based on GW-Us64Mini2G for Windows Xp .
Only its beginning is modified(until the Psp xlink mode part); the rest remains the same.
1. I downloaded Windows Driver V 1.2.2.0 and Windows Vista Driver V3.0.2.0.
2. I installed the Vista drivers as detailed in the quote above. Then I extracted the Windows Driver V 1.2.2.0 onto my desktop and after I right clicked it and selected Properties.
3. I then clicked on the Compatibility Tab and check marked Run this program in Compatibility mode for and finally I selected Windows XP (Service Pack 2).
4. Only after step three I activated the installed and only then did it installed the old drivers onto my hard drive.
The good news, PSP Xlink Mode shows in Device Manager under PCI GW-US54Mini2.
