Thanks Hector.
But unfortunately that didn’t help. The whole system freezes and I cannot save anything. I did try and do File Save but doesn’t work. The only way I can save what I am doing is to to close the project and go back in every 5 minutes hoping it doesn’t crash in the meantime. I got Premiere CS3 & Matrox RT2 on the advice it was a stable platform. Now I’ll never meet my deadline.!