* If I had you use Killbox to delete any files, go ahead and delete the C:\!Killbox folder then empty the Recycle Bin.
* Check this out for info on how to tighten your security settings and some good free tools to help prevent this from happening again.
* Go to Windows update and install all "High Priority Updates".
* Now turn off System Restore:
On the Desktop, right-click My Computer.
Click the System Restore tab.
Check Turn off System Restore.
Click Apply, and then click OK.
Restart your computer, turn System Restore back on and create a restore point.
To create a restore point:
Single-click Start and point to All Programs.
Mouse over Accessories, then System Tools, and select System Restore.
In the System Restore wizard, select the box next the text labeled "Create a restore point" and click the Next button.
Type a description for your new restore point. Something like "After trojan/spyware cleanup". Click Create and you're done.