Are there any indications other than a slow computer and hangups that lead you to believe your system is infected?
We need more than "I think it is safe to say I have some malware or virus" before going through the malware removal process. It's possible that you have a hardware or software issue causing the slowness and hangups.
Please read and try these suggestions here http://www.bleepingcomputer.com/forums/topic87058.html
If, after doing the things listed, you still have issues post back in this topic.
Edited by Queen-Evie, 16 May 2012 - 07:41 AM.