..from the link below. (If you already have one of the Service Pack 2 installers on a CD, then use that instead.) It appears like Internet Explorer has become corrupted and needs to be repaired.. ON a second computer with a broadband connection, please download the full Service Pack 2 installer from the link below. (It's a REALLY large file of 266 MB so you'll need broadband) Burn the file to a CD, then transfer it to the "problem" computer and reinstall SP2.

http://www.microsoft.com/downloads/details.aspx?FamilyId=049C9DBE-3B8E-4F30-8245-9E368D3CDB5A&displaylang=en

There are other ways to go about this, such as running the IEFix Utility from the link below which should fix Internet Explorer and the ability to use ActiveX, but it won't cure the problem with the SP2 issue. Running the SP2 installer from above should fix both problems.:

IEFix Utility
http://windowsxp.mvps.org/IEFIX.htm

Hope this helps.

Grif