Which folders/files may I delete?

[purpleski]

Hi

May I delete the following

C:\WINNT\Downloaded Installations and sub folders
C:\WINNT\Downloaded Program Files
C:\WINNT\Connection Wizard (this folder is empty)
C:\WINNT\Cursors (if I don't want them?)
C:\WINNT\Installer
C:\WINNT\Minidump (this folder is empty)
C:\WINNT\msdownld.tmp (this folder is empty)
C:\WINNT\Registration this contains a whole load of CLB files

C:\WINNT\repair
C:\Program Files\Uninstall Information
C:\Program Files\Uninstall Information\IE UserData NT
C:\Program Files\Uninstall Information\ieupdate
C:\Program Files\Uninstall Information\oeupdate
C:\Program Files\Uninstall Information\OutlookExpress

Lastly if I do a search *.txt files I find 1,137 files some are cookies some are but what about things like c:\winnt\ModemDet.txt and so on can some of these be deleted?

Thanks.

Regards