Helpfull guide to fixing IE Problems:
http://www.microsoft.com/windows/IE/community/columns/IEtopten.mspx
Top 10 XP Problems:
http://www.microsoft.com/technet/prodtechnol/winxppro/support/wxptopkb.mspx
XP Startup problems:
http://support.microsoft.com/default.aspx?scid=kb;en-us;308041
http://www.microsoft.com/windows/IE/community/columns/IEtopten.mspx
Top 10 XP Problems:
http://www.microsoft.com/technet/prodtechnol/winxppro/support/wxptopkb.mspx
XP Startup problems:
http://support.microsoft.com/default.aspx?scid=kb;en-us;308041