http://www.amazon.co.uk/Belkin-802-1...7597545&sr=8-1 I got the belkin wireless g gaming adapter for my girlfriend the other week off amazon and its very good, can be used on the ps3 as well if you have a poor connection itll improve it, in fact it can be used with any device with an ethernet port (bluray player etc).
I bought mine for £16.99 the price seems to fluctuate all the time so keep an eye out. Also, it doesnt
necessarily need its own power supply., you can either plug it into two usb ports or use the supplied power adaptor