If you want help (or mine at least), please use proper sentences and take your time when posting.
Firstly, tell us exactly what you have done. You rooted with Unrevoked, okay. What ROM did you try to install? What happened, exactly, during that process that indicated to you that it had gone wrong? What did you do about it?
Describe exactly what you are seeing. You turn the phone on, what happens? What does the screen say? Does it look like the recovery menu? Can you do anything from there?
Use as much details as possible. We need detail of exactly what is happening, not a two line whine about how your phone is broken repeated in every post. If you want help then you need to be articulate and use detail.