Corrupt registry? "c?\"

[boein]

Hi All,

Does anybody know the meaning of a path that looks like "c?\program files\..." Sometimes the value in REG_SZ contains a path with "c?\" instead of "c:\". Why does windows replace the ":" in the registry by a "?". Is it save to change it back to "c:\program files\..." or does it have a special meaning in the registry.

Thanks

Wim