Just picked up the blackberry 8900 curve yesterday from tmobile, and my question is coming from the 8800 (one of the best phones ive ever owned) the people on the other end never complained of anything, but now with this new phone they hear every little thing....its like the microphone is turned way up, my question is what can I do to lower this, or eliminate this....im not a fan of bluetooth, and choose not to use one....

Nothing you can do, that I know of.

I think what others hear (and what I hear) depends on the other phone. Sometimes I'll have to turn my volume down for one person, up for someone else. Makes sense that different phones/carriers will come across differently. Your phone is probably fine. They can adjust theirs.