Multi Function Printer over Terminal Services

Got a good one. I am running Windows XP client that has
an HP d 135 OfficeJet conneced via USB. It uses a DOT4
port. I've edited the registry to allow the mapping of
all ports, and thankfully, the sucker printed in our SQL
app. Here's the problem... When I go to the scanning
function, it gives me an error: No TWAIN source
located. I haven't been able to test it outside of the
SQL application. Any ideas? If you need more info, I'll
be more than happy to give it.

Thanks!

GRant