remove alpha antivirus

I have followed your instructions: 1.Remove from task manager 2.Download Malwarebytes'Anti-Malware (but i do not get a prompt to run this file). It brings me to RapidShare - which i joined, but it still doesn't download the file. Any help would be appreciated.

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.