...time to reformat....(with major change in networking)..saves time
fridge,
If you can save all your needed data/info...reformatting is the easiest..imho. There are often so many unseen pointers all over the place...it's mind-draining sometimes to try hunting them all down...
ZoneAlarm is great sw...although if it's initially set...it's 100% defensive settings can restrict ya'. I'd really look into making IE your secondary browser, there's so much hacker crap destined for IE...Mozilla's Firefox is terrific...and you can "ramp up it's efficiency" by using a few plug-ins as well as having an friendly interface to configure thru.
$.01