You need to look at the card and see what it says
Hardware Version 1.0/2.0/4.0/4.1
If it says 4.1 (hopefully it does) do the following for a quick setup:
Open the Device Manager
- Find the Network Adapter with no drivers.
- Select Browse my computer for driver software
- At the bottom, select “Let me pick from a list of drivers on my computer”
- In the next window, scroll down to Network Adapters and double click. Then click “Have Disk”
- In the box that pops up, navigate to/enter this path: C:\Program Files (x86)\RALINK\RT6x Wireless LAN Card\Driver
- Hit OK then scroll down to “Ralink Technology Corp” in the box on the left side. On the right side, select “802.11b/g Wireless Adapter.”
- You're all set.
If that doesn't work follow this:
This card is based on a chipset that RALink uses. Either way, they offer a driver that works.
http://www.ralinktech.com/ralink/Home/Support/Windows.html
Download the RT2500 installer.
If it isn't 4.1, I'd contact Linksys direct. i don't have a good answer on how to make it work...
OR
You can try downloading their Vista driver package:
http://homesupport.cisco.com/en-us/wireless/lbc/WMP54G/download?