Dylan:
First of all do a windows update, this will close all the holes (bropia came into your computer by a file you accepted and opened through MSN Messenger). Also it's very important to keep your AV up to date.
Bropia Removal tool
info and removal instructions SDbot
removal instructions RBOT
info and removal instructions KIPIS
I also advice you to run
Avert Stinger, this one will remove most worms and trojans (incl. Mydoom).
Good luck!
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