Hi, I'm happy you like the game!
About window mode: What you describe is how every 1st person game made with the 3d gamestudio behaves in window mode. The only way to avoid that is to play in full screen mode, simply check the 'Full screen' option in the starter.

Additionally, I'm no longer working on the game, as you might have read. The server will go offline soon, when I'll need it for my new project. That will probably be February 2010, maybe earlier.