compress old files

That is just a list of files which qualify TO be compressed, unless of course you've already compressed them, in which case it's a list of files which have already been compressed.

The key here is that it's just a LIST of files, not a container of files. You can not delete files through there and wouldn't want to anyway.

No-one will contact you direct, as this is a public forum. I know you posted the same question yesterday, but I'll answer this anyway.

The compress old files bit of disk cleanup, will just compress the old files, it just saves on disk space. You can't delete those files from there. Nor would you want to.

It is something that is available for you to CHOOSE (to save space by compressing old, seldom-used files).

It is not an item (or items) that you can delete.

I would further advise an element of caution on your part, for fear that you might render your system unusable by deleting a system-critical file. ;)

hi
you can get rid of the message - and speed up 'Disk Cleanup' with a simple registry edit, see here -
http://support.microsoft.com/kb/812248
is that what you meant?
cheers