Nope not sure but ive been playing tony hawks 3 online using a Zoom External USB modem that i bought for ma pc before i got ISDN! Playing TH3 against loads of other peeps is cool! Still cant compare to counter strike but wot can!
Theres a guide in the Tony Hawks 3 manual that tells you what modems you can use and also how to do it! Its really easy and is excellent! You can also use an ethernet PC adaptor for cable or ADSL if u have them! Try looking at <a href="http://www.gamefaqs.com" target="_blank">http://www.gamefaqs.com</a> and go to the Tony Halks 3 forum and look for the online topics theres loads of um!