Upgrading blackberry curve?

i just got a blackberry curve 8330 on halloween and i was wondering,

1.how to upgrade it

and,

2.how to download/change themes



the carrier is verizon, just in case you need to know.Upgrading blackberry curve?
Go to crackberry.com for all the info you need on how to upgrade the system. You can also check there for themes. You may also want to check out themes4bb.com, bplay.com, nancydrewthemes.com, and pimpmyberry.com for themes. There are tons to choose from. You can find info on how to download themes at crackberry.com too. There are a few ways to do it, depending on what you want.