help choosing a wireless card please!!

My linksys WMP54g wireless card doesn't work on win7 64bit and I can't find drivers to make it work...after searching a while it seems like some people have made it work but most have not. I have a WRT100 router, my mobo is an ASUS M4A89TD PRO and I also plan on installing Linux Mint (and perhaps other Linux distros) so I need a good card that will take advantage of wireless N and work on win 7 as well as linux...
...anybody have suggestions???

Thanks in advance!!

MJ