Do you have cable or dsl internet? If so, then yes, that is a router.....

As for the original questions, the games you mentioned only support Ad Hoc multiplayer mode.

You need games with an Infrastructure mode (ex: Socom) to play through a router.

There is a solution to this, but it is not a very good one.

Xlink Kai. It lets you play any game, but not many people are usually playing and you also must hack your Linksys router firmware, and then only allowing either your computers or your psp to go on the web. Can't have both at the same time. I tried before I knew I had to hack my router firmware,which I was not ready to do. It's not really worth it from how few people were playing.

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