You must have used some kexts. What did you check when you installed iDeneb?
From the little research I did on your hardware, it looks like there is no support for your graphics card or chipset, sorry.
And if there isn't, there is no getting US, video, etc to work. Well, maybe with lots of tweaking you could get USB, but that depends on your controller, and probably is very complicated. I wouldn't now how to do it, so I can't help you with that.
Wait, I just saw a page that stated something about Chameleon 2 RC4 and the GM45, and from what I understood Chameleon supports this -don't ask me how, I think there are no macs with it- so it should work.
The graphics seem a no go thou. I read about fixes for native resolution, but they seem complicated and are not sure to work.
So, what we need now is a list of what you have to check to install iDeneb and your specs. Are you using GPT or MBR?
Oh, and just so you know, your going to have to get into DSDT.