That is truly amazing!
After 5 years of crawling about inside XP that list is something that I have never looked at.
Some of the other options look like they might be of interest as well.
I have always limited the number of columns in exporer to avoid scrolling and limit space, not to mention that the majority of the time most of the extra columns would not be useful.
Thank you skwire
for your prompt and simple answer, I can now go on a long overdue hunt for unwanted DLL's of which I suspect I may have quite a few.
Never mind about updating to Vista or 7, I doubt I will ever work out all the tricks in XP.
Your help is much appreciated.