VS 2008 and IBM ISERIES DATA PROVIDER

I have been searching and not finding anything on this in VB.NET usinf SQL
I am planning an application where I would like to do the following.

1. Select an ISeries from a dropdown (I know the names of these)
2. From the selected ISeries ... bring back to a listbox the libaries in MY library list.
3. Select a library (table or sheme or whatever is in a name) and bring back to a list box the files(tables) in the library
4. IF possible bring back a field list from my selected File (or table)

Connecting to the ISeries and writing/reading/updating data is no issue. I want to find a way of bring back to my User Interface those items listed in 1..2..3..and 4

thanks

gollnick