Ok here's my specs:

Dual Core E2160
1GB RAm
Vista Home Premium
Intel Graphics Media Accelerator 3100

So, I just started using Dosbox the other day so I'm a complete noob to all this.

What's happening is that on the two games that I've been playing (Bioforge & Crusader No Regret) I get this blocky black stuff that appears on the screen randomly when I go into a different screen on Bioforge or if I let the game sit there in Crusader I get the same kinda stuff but its gray mainly. If I move my guy through it in either game it erases it or if I go to an item menu or another scene it goes away and then sometimes returns again the next time the screen blinks.

This might be pretty basic stuff but I don't know how to search out what this problem is called.

Thanks.