ASP 0185 Missing Default Property A default property was not found

[SL]

Hi,

I am trying to run a IIS Application written in VB 6.0 SP5 running on Win XP
Pro machine and I am getting this error - ASP 0185~Missing Default Property~A
default property was not found for the object when I am trying to set a
session variable to a recordset field value

Session("ID") = rs.Fields(0) gives error

but when I change to
Session("ID") = rs.Fields(0).Value
it does not give error bcos default property is mentioned

But this code "Session("ID") = rs.Fields(0)" runs perfectly on a Win 2K
machine
Could someone explain why it would not run on an XP machine or is there any
settings need to be changed in IIS?

Additional Info:
ADO ver 2.5
Connecing to Oracle 10g database

Thanks in Advance