Nooby Boot Camp Questions

Hi, I just recently acquired a Macbook and Boot Camp and had some nooby questions. I was hoping that you guys could help me out cause how awesome everyone here is

1. Could I repartition my hard drives without losing data because I realized I created too big of a hard drive on the Windows side and want more on the Mac side. Is there any way I can do that without losing all my data?

2. Is there anyway I can move data from the Windows side to the Mac side like movies/music/apps ect.

Thanks for all the help guys. This forum is the best!

Install this in windows. It will allow you to read and write to the OS X side.
It's not free, but does have a 5 day trial.
Back up your windows stuff on to your Mac partition.
Then use bootcamp to go back to a single OS X partition.
You can then re-run Bootcamp and create a smaller partition for XP this time.
You can't just move apps back and forth though like you can for most in OS X. You can move the installers over (if you kept them) so you don't have to download 'em again. You will have to go through all the Windows updates again.