Removing system apps doesnt give you more space. If you just want to move more, there is a non-root thread in tips and tricks that may help. Its a sticky about forcing apps to sd, akthough you shouldnt move apps with widgets, UI apps or anything that needs to run on start up.
If you find taht is not enough for you, you should read the memory faq in the sticky thread here, followed by the rooting faq in the same location.