i have intresst in buying patapon 2 but its a game that i have to downlod.
well my question is once i download it do i still need to have internet access to paly it. and what do i need to download it. pls answer and think u.

no you dont need the internet to play games that have been downloaded, unless they specifically rely on online (for multiplayer modes for example). to download, you either need a wifi spot to access the PSN store via the PSP wifi, or you need the PC program to access the PSN store, i believe it's called "MediaGo" and I think it can be downloaded via the playstation website. if not just google it. if you get it on the PC, you'll need a usb cable to connect the PSP to the computer, which most PSPs come with anyways. if you don't have one, you can get one for like $8 or so. not hard to get.

thank u so much sterculius. and do i need a memory stick?

yeah, you'll need some sort of storage for it.