Virus

Hi.
My computer is infected with a virus that makes my folders into .exe application files. It makes their sizes 37.0KB while there's more in it. I'm able to open the folders but I can't finde them when I'm browsing, since they're .exe files in the computer's point of view and not folders.
Every Anti-Virus I use deletes these folders immediately. But I need the folder contents so I can't delete them.
Please help me it's driving me crazy!
Thanks

Please download the current version of HijackThis from HERE

• Double click and run the installer.
  
• It will install to C:\Program Files\Trend Micro\HijackThis\hijackthis.exe
  
• After installing, you should get the user agreement, press accept and Hijack This will run.
  
• Select Do a system scan and save a log file. This will open a notepad file of everything Hijack This found, copy and paste it back here.