[Q] Re-sizing/Repartion Internal Storage On A Samsung Vibrant topic

Hello, im new to the community and ill like to say, this site helped me a lot with my first android phone which is a gift from my father and its a pleasure to be a part of it, but besides that theres a question i was meaning to ask ill look over the forums and i couldn't find an answer to my problem and it comes in 2 parts.
1. Is there a way to repartion the Samsung vibrant so it occupy all 16gb or something close to it.
2. is there a way to expand /data/data folder to more than 500mb because an application requires to be installed there for some odd reason it keeps failing and saying it ran out of space

if you can help me ill be forever in your debit, thank you.