Can't Open any web browser except Internet Explorer, OR open SOME .exe or ink files!!

Hi! Thankies for clicking!

Okay well i recently have been attacked by a virus (cleaned it up w/ smitfraud) but now i have 2 major problems, if anyone can help i give you 100000 hugs!!!

Okay so like the subject is, i can only open Internet Explorer or Safari. I CANNOT open Opera or Firefox! Those are my main browsers, and i just downloaded Safari to see if that worked and it has, but i want my Firefox back!

SECOND problem, i cannot open .exe files!!! I used a computer at my sister's house to export .exe registry files onto a flash drive and things like that, i deleted the reg. on my laptop, and imported those ones. It hasn't worked Major help please!!

Also, randomly i was unable to open "Notepad" and "Internet Explorer" I have found it was on the list of Data Execution Prevention files (Control Panel>System>Performance Options) however Firefox was not on it, but nevertheless i did remove them from the list, and now they randomly pop up on it again and i'm continuously having to remove them when i start up my laptop and stuff.

Once again, .exe files don't work, so i cant download Hijack this or Malware Bytes, but however i to have Smitfraud and Superantivirus installed, and for some reason both do work, but ive deleted all threats found on Super anti virus, hasn't help.

Err - some viruses will hide from installed anti-virus software. You may still have viruses, or you may have cleared them all, but the damage they have done is too significant.

You'd be better off doing a repair install of Windows...

Boot to the Windows disk, hit enter to continue to install Windows (DO NOT PRESS 'R' at the first screen), hit F8 to agree to EULA then select the 'Repair the current Windows installation' option.

A repair install will replace all system files but leave rcurrent programs/settings in place. You will then need to re-apply all Windows updates and scan for (and remove) any remaining virus(s)/malware.

If this still doesn't work, a full re-installation of Windows may be in order.

Have you tried booting into Safe Mode to run executables? During POST, hit F5 to enter the advanced windows menu. Select Safe Mode option.

If you can run .exe files from safe mode, then install hijackthis (downloaded from another computer) and run it from there. Save the log file so that you can post the results.