Wierd and Strange Bug!

Hey all,

I got a very strange bug that's really annoying, aren't they all? I've tried every single thing to get ride of it but it still stays there! When I run the program in VB itself it doesn't show this bug but when I build a .exe and run it it does! It may be because I'm using DirectX to change my screen resolution and BitBlt to do all the animation etc... Anyways here's the scoop on the bug! This bug is only limiting how much of the screen to show! Here's a picture of it! All of the blue X's mean that the tiles are not loading! I added the blue x's manually so it's just putting black square on the side of my computer

<img src="http://www.webforcecreations.com/game.jpg">

or
Visit http://www.webforcecreations.com/game.jpg

well it is hard to tell where the problem is but two thing that came to mind when I read this
are you really drawing over there at all?
and the most probable thing for me. Are the tiles you want to load for over there the right size? If you load a picture that is smaller than the rectangle you specified for loading/drawing, wierd things can occur...