[quote user="Robert Hook"]You can e.g. List all by "Version" or, default to the highest listed.
[/quote]
Not sure I understand your point. If the Registry path is HKEY_LOCAL_MACHINE/SOFTWARE/Bentley/MicroStation/{GUID} how would one 'list all by version' or 'default to highest'?
Suppose customer has three versions of CONNECT installed, with Registry keys...
HKEY_LOCAL_MACHINE/SOFTWARE/Bentley/MicroStation/{GUID1} HKEY_LOCAL_MACHINE/SOFTWARE/Bentley/MicroStation/{GUID2} HKEY_LOCAL_MACHINE/SOFTWARE/Bentley/MicroStation/{GUID3}
How would one achieve what you suggest?