I use BootitNG to resize partitions. I like it much better than PM.
You can move some stuff, but I won't go too far.....
My Documents for instance can be relocated. Right click on it and select
Properties then Move.
This can give you alot of space if you have plenty of stuff in My Documents.
You can uninstall and then reinstall programs onto the other partition.
Don't move any system files, like the windows directory
Regards
Mark Dormer