Adobe reader or foxit reader, quicktime, flash plugin for IE and FF, (and flashblock too, if you ask me, for FF), a free PDF creator (the name escapes me), rename admin account, ensure all accounts password protected, turn on remote desktop (won't help w/o port forwarding), install adaware, empty recycle bin, empty IE's disk cache, shrink IE's disk cache, remove IE icon from desktop, run windows update until it tells you there's nothing for your computer, update AV, run a full AV scan, and last of all, leave it defragmenting the hard drive.

That's a good start at least.

Matthew