Something has gone wrong with my SharePoint install (see http://www.sharepointoverflow.com/questions/4149/stsadm-exe-crashes-on-all-commands), and with the errors involving registry keys and dlls not being found, I'm thinking something pretty major has happened. Short of doing a reinstall, I'm wondering whether a 'Repair' of MOSS 2007 via Control Panel -> Programs might do any good.
(Although I've a feeling the problems are more at the WSS level, but I don't see that in the Programs list...)
I'm on Windows 2008.
Does 'Repairing' MOSS 2007 do anything useful, and more important, might it 'repair' (i.e. delete) things I wouldn't want it to?