Schema Problem

[vb6dev2003]

Hi,

I have 2 schemas (designed with XML Spy) that I want to use as a main source
in a new InfoPath form.
When I create the form, I can link the first schema (schema1.xsd). Next,
InfoPath asks me if I want to add another schema. I click YES and I point
to the next schema (schema2.xsd).

However, in my form, the data source drop down is greyed out and I can see
only the first schema......

I tried to use the same namespace, different namespaces, etc.

What I am missing here?

Thanks,

vbdev