Free Software

Spyware/Adware/Malware

Lavasoft AdAware - www.lavasoftusa.com/products/ad_aware_free.php

Spybot Search & Destroy - www.safer-networking.org/en/download/index.html

AVG Anti-Spyware - free.grisoft.com/doc/5390/us/frt/OS

Anti-virus/Firewall/Internet Security

AVG free anti-virus software - free.grisoft.com/doc/5390/us/frt/0S

Other

Adobe Pdf file reader - http://www.adobe.com/products/acrobat/readstep2.html

Software to Buy

AVG anti-virus, anti-spyware and Internet Security - http://www.avg.co.uk/