I have the SRX PCI-adapter for my wireless internet. I am 2 stories up and on the other side of the house from the router and I still get a very good signal. It doesn't wipe out my phones either. I also paid $95 for it on newegg. I can get a good 15-30 ping on CS 1.6 as well.
Bad pic, but you can notice it on top of my comp.
http://img77.imageshack.us/img77/9707/dscn09121bo.jpg
I didn't mean to hijack this thread, I guess I got over exited =/. LMK and I can take it down.