I would take a glance at what the registry says is available for uninstall.
314481 - How to Manually Remove Programs from the Add or Remove Programs
Tool: http://support.microsoft.com/default.aspx?scid=kb;en-us;314481

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Mark L. Ferguson
.
> For some reason only six programs appear in the list of "uninstall a
> program"
[quoted text clipped - 5 lines]
> Does anyone know what has happened?
> John
Hi John,
Check out what Mark suggested, it's possible something has changed your
Registry settings to not display your programs. Also you might want to check
out this little app and IMO it's better than the Windows version of
installed programs. They both work the same way as each looks for the
program install.log, but MyUninstaller goes a little further and you can
read more about this under the "Description" section. BTW, you can run this
program without having to install it as it's available as a standalone app.
MyUninstaller v1.40
http://www.nirsoft.net/utils/myuninst.html

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All the best,
SG
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> For some reason only six programs appear in the list of "uninstall a
> program"
[quoted text clipped - 5 lines]
> Does anyone know what has happened?
> John
davis - 26 May 2008 03:16 GMT
Mark & SG
Your suggestions about the register made me remember I had run a register
cleaner a few days ago. It was suppose to clean out unnecessary uninstall
items but it removed almost all items to make sure it got the unnecessary
ones I guess. Fortunately the software included an "UnDoIt" feature and I
was able to recover the list and all is well.
Thanks, Mark & SG, for your help,
John
SG - 27 May 2008 03:35 GMT
Hi John,
Another testimony why NO ONE should use these snake oil Registry Cleaners.
No matter what they claim, they are useless and dangerous. At least
whichever one you used it had a Undo feature. BTW, you are most welcome

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All the best,
SG
Is your computer system ready for Vista?
https://winqual.microsoft.com/hcl/
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Just type in Microsoft
> Mark & SG
> Your suggestions about the register made me remember I had run a register
[quoted text clipped - 4 lines]
> Thanks, Mark & SG, for your help,
> John