i tried to upgrade to the 4.5 OS, but when i went to the link and started the app it said i was already running the most current version....but im running 4.2.....ANY HELP on how i can upgrade
OS 4.5 has not been officially released for the 8830, so if you go to a carrier site, you'll get 4.2. The latest OS 4.2 is 4.2.2.196. The best thing you can do is wait for the official release. I don't recommend any new user attempt to run a beta OS.
A good way to get ready for the upgrade is to perform the Memory Optimization Procedure that's linked in my sig. In addition to helping you free up memory, it's an excellent OS tutorial.