OS Windows Vista Home Premium 32-bit
Browser Firefox with various plugins.
Video player Media Player Classic Home Cinema/iPod itself
Audio player iTunes/Aimp2/iPod itself
Image editing Gimp/Adobe Photoshop Cs4/Paint.NET
Photo editing Gimp/Adobe Photoshop Cs4/Paint.NET
Image viewing Windows Photo Gallery & Firefox
Torrent client Vuze & uTorrent
Video Editor Windows Movie Maker and Sony Vegas
Office tools Microsoft Office 2007 (Idk what edition lol)
Anti-virus Microsoft Security Essentials and common sense