It is a decent iBook with a fair sized HD and adequate RAM.
There are currently NO virus's for Mac OS X.
P2P programs will run on the Mac. Are you planning on "borrowing" software and music?
Beware of the MS Office download from a P2P site. It has a trojan that could, potentially, damage your Documents folder.
is this a good note book for a first time mac and notebook buyer? oh and i know this sounds stupid but if i use a p2p program on can it get viruses.