never heard of a tool like that o: i thought you need a ps3 in order to play adhoc online (adhoc party)

edit: i've done a little search for your case, the 2 most talked about adapter is "Wifi max" and "Planex adapter"

and even saw a vid on youtube:

http://www.youtube.com/watch?v=KlTYhgxxo2w

most importantly is the program that lets you go online with it

Xlink Kai

they say the ps3 adhoc has way more players than xlink kai, but it's your choice.

hope this helps :]