This does not answer your query directly but I guess it will help.
Intel hosts live chat event with their experts where people can discuss Intel products technologies. The next event will be held around their core processors. I think that it will be a good platform to ask this or any other question. The next event is on 26th March at 9:30 am GMT. More info at
You certinally need to ensure you have the latest BIOS, the 945G chipset only supports 1066Mhz FSB processors, so if it does work it would only work at 2.4Ghz.
You may be best to return it and get something like a E7500, E6500.