as far as im aware the PS3 does not support Draft N wireless technology....
the best and cheapest and most stable way to do it really is to run a RJ45 Cat5 Network cable to the router that way your running much better speeds...
The adaptors wont be compatible with a PS3 anyway i was thinking for your PC
http://www.overclockers.co.uk/produc...rtby=priceDesc
Any of them will give you great bandwidth... however when replacing old roumers/modems how oftern do you actually do this? its best to buy the state of the art and stretch your budget as much as possble to get years of fantastic connection...
Cheaper routers wont include such good secuirty settings
I cant rate the Netgear DG834N enough though dude personally... pick a model number you like and surf for the best prices you will be surpiced in the difference... i just use dabs or overclockers for detailed spec lists
EXAMPLE:
http://www.pixmania.co.uk/uk/uk/4542...html?srcid=867
£70 for it there dude cracking router