Help Needed BSP

I want to learn not to use BSP I know what they are but I have no idea how to use them I want to use then to create a FPS map and I wish to know how they work, how to use them for view culling and collision detection. Could anyone please help, an example or demo code would be great!

Please note that the example needs to be in directX 9 and that it is preferable that it is written in VB (C# is ok)

Check this site out. It has a useful BSP loader. It's written in C# though. Probably pretty easy to convert to VB .NET.

I could not find anything

I could not find anything

Sorry, I thought I posted this address:
http://dotnet.org.za/pieterg/archive/2005/08/21/42492.aspx