Programmatically determine namespace

[Suz]

I am trying to create a reusable Infopath form using VB managed code. I would
like to be able to programmatically determine the namespace of the xml
document. While this is usually "my", we may want to change it depending upon
the application.

Also, is there anyway to programmatically determine the namespace and xml
field reference for a repeating table, for example:
"my" is the namespace
"my:group2" is the table xml reference.

<my:group1>
<my:group2>
<my:field1></my:field1>
<my:field2></my:field2>
<my:field3></my:field3>
<my:field4></my:field4>
<my:field5></my:field5>
</my:group2>
</my:group1>


Thanks!