blue jack

How do you give it access to clean the registry on limited accounts in XP? CCleaner works fine when cleaning apps and cookies, but when I run the regcleaner, it scans, I select fix, and it acts like its "fixing" but it isn't. If I reselect scan for issues, everything is still there. Or...is there a way I can scan on my admin account and have it scan all user registry enties? Thanks in advance.