For your emails not to wake you use the quite profile. Just make exceptions for who can call you and wake you up. I can't tell what provider you have from the wap site so I can't help you with your other question. Someone else will be able to though
Posted from my CrackBerry at wapforums.crackberry.com
another thing you can do is set you phone to auto turn off and on at certain times in the night, that's like one of my favorite features! a real battery saver if I forget to charge also