Maya Dynamics-Render Prob

[handyandy2003]

Im having a bit of a problem with mayas dynamics renders. Even when I use the render globals to specify what frames to render, it senders the simulation as what ever it looks like at the frame I am on in the time slider, so say im on frame 50 in the normal maya camera, view and I specify to render between frames 1 and 100, it gives me 100 renders of what ever the simulation looks like at frame 50.

Also how do you change Mayas jpeg quality render saves, as when I save them to my HD they only look like they are being saved at Low/Very Low quality.

Any help would be great!