What I used on XP ....Foos!!

Note yes this is the same as my vista one as they are all backwards compatible or should be at least.

RAM.VBE (Read the thread for it)
-Firefox - http://www.getfirefox.com (with the following extensions)
-Noscript, Hide Tab bar, Fasterfox, Key Scrambler, Page Title eraser, DisableBackspaceNavigation

-WinPatrol - http://www.winpatrol.com/
-OpenOffice.org - http://www.openoffice.org/
-Zone Alarm free firewall - http://download.zonealarm.com/bin/free/1025_update/zaSetup_en.exe
-Defraggler - http://www.defraggler.com/download/downloading
-Advanced Disk Cleaner - http://innofiles.com/soft/cleaner/advanced_disk_cleaner.msi (side note you must register it but heres my registration code use it)
heres the key: 7DTBTTTT3R333C533D653M34X7463A36


Minor usage (messengers and such)
-Pidgin - http://downloads.sourceforge.net/pidgin/pidgin-2.4.2.exe
-Songbird - http://download.songbirdnest.com/installer/windows/i686-msvc8/Songbird_0.6_windows-i686-msvc8.exe
-TuneXP - http://www.download.com/3001-2086_4-10290928.html?spi=7af458986f9ec4642c32ce92066d4c83