Thank you for the advice, we will check SOA and try to do something with it.
I also saw that in soa_client.zip net folder there is some VB code example.
Hmm I can only see C# examples in my soa_client/net folder. I checked tc10 and tc11.
If you check the documentation under:
Customizing Teamcenter->Services Guide->Getting started with Teamcenter Services->Basic concepts for using Teamcenter Services->Services documentation. It says that C# is used for .Net.
However double checking the "API documentation" for .Net i noticed VB in the syntax section which suggests that you're right. Sorry for missleading you on that point.
If you get it working using VB please let me/us know. I don't use VB but it's nice to know that it's possible:)