.Net look fror my GUI

Question

Hi,

I have a question, which must be very trivial to answer I am pretty sure. I am desiging my application GUI, and I would like it to look like .NET style, but don't know how. It does look nice as I am editing my Form inside Visual Studio. But as soon as I launch my application, the GUI gets back to its ugly old windows looking style.

How to make it look like .Net style even in the compiled version, not just in the Visual Studio Designer?

Thanks,