I stumbled my way around the ralink site but was unable to get any of their drivers to work for my WMP54GR on Win7 64, if someone knows of a workaround id be glad to try it and report back.
This how I got my Linksys Card to work. I selected my card in device manager and went to search for driver. I put my linksys cd in and and selected to find driver from c.d rom. Worked everytime I installed Windows 7. And I installed this way on three different computers. Hope this helps.
My Computer
Computer Manufacturer/Model Number
Self Built:kellymac35/TOSHIBA LAPTOP X775 3DV78
OS
WINDOWS 7 Ultimate x64 Full
CPU
INTEL i7 930/INTEL i7 2630QM 2.9 GHz With Turbo Boost
Motherboard
EVGA X58 3X SLI CLASSIFIED/TOSHIBA
Memory
MUSHKIN ENHANCED 12GB/8GB SAMSUNG DDR3 1333 MHz
Graphics Card(s)
EVGA GTX570 S.C(SLI) FERMI /GTX560M 1.5GB of GDDR 5 DISCRETE
Sound Card
REALTEK ON BOARD /BUILT IN HARMAN KARDON STEREO SPKS
Monitor(s) Displays
TOSHIBA 32'' /17.3" LCD 3D READY 120 Hz LED BACKLIT
Screen Resolution
1360x768/1920x1080
Hard Drives
MUSHKIN Enhanced Callisto Deluxe SSD X 2 240GB RAID 0/MUSHKIN Enhanced Callisto Deluxe 240 GB SSD 750 GB Serial ATA Hard Drive
PSU
CORSAIR Professional Series AX1200 1200W
Case
THERMALTAKE Xaser VI
Cooling
CORSAIR HYDRO SERIES H70
Keyboard
Logitech MX 3200/PREMIUM RAISED TILE LED BACKLIT
Mouse
Logitech
Internet Speed
DSL
Other Info
(SPDIF) To Kenwood VR-6070 Lucasfilm THX Select Surround EX