Control Panel -> System -> System Restore Tab -> Then switch System Restore off -> Restart System -> Run Adaware -> Delete all Adware Files -> Run Spybot SearchandDestroy -> Delete anything that comes up -> Switch off Computer -> Switch Computer on -> Check Homepage
So far there appear to be no easy "fixes" for the bug you got
If its true that this coolsearch crap is layered thru the registry you might never get it all out.
Okay, after following the various links you guys have provided, I found a program called CWShredder which seems to have (finally) eradicated this problem from my system. Anyone looking for the program, I found it at http://www.spywareinfo.com/~merijn/cwschronicles.html