Thanks Gonk.

My projector is an Optoma H31, I'll see if I can find the info about it. I know that the DVI plug on the projector does have the 4 pins on it.

And just let me make sure I'm hearing you right..even if I get the DVI cable to plug into the 990 via a convertor or by removing those 4 pins, using a VGA adapter wouldn't work anyway? So in this case I'd just have to bypass the 990 and run straight to the DVI cable?