You can delete any of the C:\Windows\$somefoldername$ folders. Those are for any updates you've installed (hotfixes, service packs). You will not be able to uninstall the hotfix/SP after you do this.<br><br>Service Pack files are held in C:\Windows\ServicePackFiles\. Just a warning though, if you delete this folder, any component installed via Add/Remove Programs will be from what ever your CD is (be it RTM, SP1, or SP2) so you will have to reapply the current service pack you're using.<br><br>Play World of Warcraft, for free!
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Play World of Warcraft, for free!