Help needed w/ Corel/Ulead video editing problem

[worldwide]

I recently bought a Sony HD Camcorder. I use Corel/Ulead Video Studio 11 and also Video Studio Pro X2. I am using MS XP home and I have a dual processor w/ almost 4GB of Memory.

The Problem: Since upgrading to HD camcorder when I am editing my video projects my video is very choppy and lags behind the music track. As per Corel's email advice I downloaded the latest version of DirectX and also DivX. Nothing has improved.

Does anyone have further suggestions that might resolve this problem?

[Bon-Z]

In which format are the videos copied to PC from your Sony HD Camcorder?
Then in which format are you trying to edit them?