You got jacked. I see about:blank all the time. Running Adaware will clean it up, but there's a registry entry called "pendingfilerename" that will pull a shitton of crap right back (pulls it out of a couple temp directories).
Most spyware cleaners are pretty good, but you still have to poke through the registry, delete crap out of the temp and temp internet files directories and the temp folder(s) in the system directory. If you're on 2K or XP, you'll need to unhide system and protected files and go to each user profile in the doc and settings folder. Look for a folder called local settings, then temp and temp internet files in that folder. Delete all the files and folders in the temp dir and the temp internet files folder. Do this in safe mode. Get all of the profiles. poop will hide in the system profiles, as well as the administrator profile (even though you can't log in as admin in normal mode on XP Home).
Go to the control panel, internet settings and change the home page from there.
Get "hijack this" and scan in the admin login (safe mode), and each user profile. If there's any suspecious looking crap loading up in the scan, google it (might have to use another machine if you can't get online). Be careful about what you 86 in HJT, not all stuff is bad.
Here's a short list of shitware that is the most common source of problems:
wintools
windupdates (not windows update!)
180 solutions
new.net
surf sidekick
msbb.exe
altnet
bargain buddy
sidefind
blazefind
intexp (in registry under hkcu and hklm/software)
myway
mysearch
VX2
whenU
webrebates
and a number of others.....
just about all toolbars are bad
and for Gods sake, don't put Kazaa, morpheous, limewire or any of those others on. There's a reason they're "free", it's called bundled shitware. Just about 99% of the machines I clean up at work (that are loaded with spyware) have one of these P2P programs installed. Read the EULA's for them and you'll see that they install all kinds of crap in the background, and you accept this in order to install the P2P progs. Also, when you clean out the bundleware, the P2P's quit working.
[/rant]
Hope that helps.
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