Well, I used to be shy (as I think most every one was at some time in their life), but after a while I decided that somthing had to be done. The main thing is taking that first step. You just have to decide "I've had enough of this shit!" It helps to shout that in the mirror :hehehe:
Then just find a way to go somewere, and no matter how bad you want to just sit back and not interact. You have to just get up and get into some conversations. Now it's easier said then done, but there really are no two ways about it. You just have to get out there and do it!
Seems harsh I know, but it's what you must do