Default [Q] How do I get BBM for LG G2X using CM7 rom?

I'm using the latest nightly version of CM7 for my G2X (very old phone i know..) and I can't upgrade now. When I go to the market it says my device isn't supported and when I try installing this I get an instant force close before it can even start up. Does anyone have an idea of what I should do to get it running on my phone?