Re:C:WINNT\Secure.html hi-jacked

First download CWshredder from http://www.thespykiller.co.uk then Run it
Close all browser windows, click on the cwshredder.exe then click "FIX" (Not "Scan only") and let it do it's thing.
Now as CWS installs via the byte verifier exploit in M$ JavaVM, just surfing a page with an infected applet can install it with no user participation. So once you’ve run the above, it is vital that you go here, click Scan for updates in the main frame, and download and install all CRITICAL updates recommended.

then reboot &
to see what else is on the computer causing problems

go to http://www.thespykiller.co.uk/files/HijackThis.exe and download 'Hijack This!'.
make sure it is placed into it's own folder, not a temporary folder. Then doubleclick the Hijackthis.exe.
Click the "Scan" button, when the scan is finished the scan button will become "Save Log" click that and save the log.
Go to where you saved the log and click on "Edit > Select All" then click on "Edit > Copy" then Paste the log back here in a reply.
It will possibly show issues deserving our attention, but most of what it lists will be harmless or even required,
so do NOT fix anything yet.
Someone here will be happy to help you analyze the results.