[libRETS-users] Using vb.net - successful login, now how to get metadata?

[Tech at ZolMedia.com]

I've used the Visual Basic.net project reference in this message: 
http://mail.crt.realtors.org/pipermail/librets-users/2006-August/000460.html
 
I've successfully logged in using this vb.net code: 

Dim session As New librets.RetsSession(strURL)
If (session.Login(strUsername, strPassword)) Then... 

Then, I want to get the metadata so that I can know what's query'able. 
 
I assume I should get it from session.GetMetadata but can't figure out how. 
 
I can't determine what datatype it should return. Any vb.net folks out there
who can help? 
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