UI: Failed connecting to the company's database

Hello,

I'm a beginner with SAPb1 development and I'm trying to practice a little bit before starting real development. I try to use the sample "HelloWorld" which uses the UI API. When I start it, I always have this message : "Failed connecting to the company's database". I've got no idea why ?

Does anyone can help me ?

By the way, if someone can tell me how to use a form made by Screen Painter in Visual Basic 6 that would be nice as I don't find a lot of information about that.

Vincent