Getting a list of users from an Access database

Question

I know how to do this with the ldb file and Msldbusr.EXE. I'm trying to do it using OpenSchema(adSchemaProviderSpecific, , "{947bb102-5d43-11d1-bdbf-00c04fb92675}"). There seems to be a limit on the length of the filepath for the connection. Even if the connections opens correctly - for example OpenSchema(adSchemaTables) works fine, there is an error - "3251 Object or provider is not capable of performing requested operation." if the length of the file path is 130 characters or greater. Most of the databases I need to be looked at have file paths longer than 130 characters. Does anyone know how to get round this limit?