There seem to be 5 models that are all called 945G7MA + something or other, and FoxConn doesn't claim Core 2 compatibility for any of them. This doesn't mean it wouldn't work, but I wouldn't count on it.
http://www.foxconnchannel.com/searcher.aspx?key=945G7MA
Oh well, you can just upgrade the PSU and GPU for now and you'll still see a big improvement in games. Later when you have saved $300 or whatever you can take care of the rest, for example with a GA-P35-DS3L and a Q6600.
Edit: jay2tall answered first, I hadn't seen the reply above this one. So, it's sure that the board won't work with Core 2?