Do 'save log' and you can put it in a private message to me (the contents of the log) and I'll help you if you'd like
You can go to this page:
http://tomcoyote.com/hjt/
Look around a little and then register if it looks good to you. If you register you will be able to post your log and the gurus there will tell you what to delete. I have not used them but I have heard about it. I think they will be of help.
As for HiJackTHIS!, you'll have to go line-by-line and check each...it will give details about each, as well as tell you if any are really bad. Anything with "about:blank", for instance, should be deleted forthwith. Read each carefully...if it's something you know, or remember downloading deliberately by the name, just put it on the "ignore" list.
HiJackTHIS! has a guide to its ratings, and so does Merjin. Refer to them before deleting anything.
It'll be a pain, but after you're done, anything else will be easy.