Windows 7 ResolveName Error

Hi,

I have Windows 7 32 Bit installed. I also have MS Outlook 2003. I have a vb6 app which uses MAPI controls 6 to send emails. I get an error when using the Resolvname property. On previous OS's this works fine. The error number coming back is 48389 with no error description. I think the issue is around the accessing of the Outlook Address Book as it is trying to resolve the outlook recipient address. Is there ?

Any help would be appreciated.

Thanks.