Something has gone wrong with my SharePoint install (see 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?