Space, you really confuss me.
Here you say that you've shipped it off to service. but later you seem to indicat that you're still working on it youself. What's up?
If you still have it, why don't you try installing the supperdrive and seeing if you can run the recovery disk. Here's how to do it.
http://support.apple.com/kb/DL94
One other note... the CPU LEDs being lit do not indicate a bad processor per se, they indicate a bad instruction. If the firmware is known good then you can surmise that you're processors are bad. If the firmware is questionable then all it really tells you is that it's either corrupted firmware or a bad processor.