"YJ" <YJ@discussions.microsoft.com> wrote:

>I've tried repeately removing a program key from Local Machine, Software.
>Using RegEdit, as Admin with all permissions (including "Full Control), I
>keep getting the following error msg: "Cannot delete Acronis: Error while
>Deleting Key." I exported the entire Software section and edited out the key
>in Notepad and imported it back, but the old key (and subkey) is still there.
> All other keys/subkeys, and related elements, of the program were
>successfully removed. Thanks for your suggestions!

Start to the Safe Mode and retry from here.
"A Description of the Safe Boot Mode Options in Windows XP"
(http://support.microsoft.com/?kbid=315222)