Than what I use. I paid 25 bucks for a Netgear WGPS606 which is out of stock there but I do see it around the internet near 30. Setup wasn't hard.
I have been using my laptop lately as a big WiFi card for my network by having it connect to my neighbors WiFi then using a network bridge to send it over Ethernet to my router thus giving me internet to my desktop and everything else. The only problem with this is I don't like the idea of my laptop running 24/7 just to sit there giving the rest of my house internet.
So I was wondering first does Linux have something similar to a network bridge like on Windows, and second if it does could I use it on the PS3 to take my neighbors WiFi and send it out to Ethernet to my router? I currently have Yellow Dog Linux installed on it but I still have the Xubuntu installer CD, so I have the option of either distribution. My desktop and laptop both run Windows 7 64bit.
(Note: My neighbor DOES know I'm using his internet and he has no problem with it, me and him talked all that over a couple days ago.)