Useful free software

Avast Antivirus – virus prevention for non commercial use

AVG Antivirus – virus prevention for non commercial use

Hijack This – free tool from Trend Micro for process removal

Malwarebytes – malware and spyware removal tool

Process Explorer from Sysinternals of Microsoft – for checking what processes are running

Spybot – Adware removal / Spyware removal software

Zonealarm Firewall – for non commercial use

Open Office – for word processing, Spreadsheets, Presentations, Graphics, and Databases

Adobe Reader – for reading PDF Documents

Trojan Remover Very good for trojan virus removal