I can't move

Ok now this is a VERY strange problem. When I first installed RPG Maker 2003, I was able to move fine in the test play. Now for Christmas I got a new video card and monitor. Now when I try to do the Test Play, the game lags down INCREDIBLY, and I cannot move an inch in the Test Play. If I hold down F10 the game runs at normal speed, but because it's being held down, I cannot move. Anyone know how to fix this problem? It's REALLY bugging me