Willie,
We have a fix for these graphical glitches covered in the FAQ (I’ll get the link if we need it), but the best thing to try is to upgrade your video drivers.
The graphical wonkiness is born out of incorrect behavior by your graphical driver and the D3D accelerated rendering pipeline in Swing. If upgrading your video driver fixes it, that’s the best way to fix the issue.
2nd best is to disable the D3D acceleration and last way is to try and run with Java 6… but they are preferred in that order for a reason, so let’s try updating the video card driver first.