Please, tell me you don't have Windows ME. If that's the case, you might as well reformat.
Anyway, just to be sure, you did be sure to hold F8 after the BIOS screen and before the Windows boot screen when you tried to go into safe mode, right? You pobably have. Well, if nothing can be thought of, I suggest this tool
Bart's PE Builder
People have made disks with this before and released the ISOs online, but what it is is a fully bootable, 32-bit, graphical Windows environment and works without installation. Basically, you can make your own Windows Live Disk. You should be able to make any change that couldn't be made before under normal circumstances.
-- Xero Grid --
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