Can anybody advise what size is the mobo in an original e510 with a 305watt ps and pentiumd 2.8g.I want to replace the mobo and cpu sp I can still use the case.I already have a 500watt ps to use so rather than just toss it I,d like to try to upgrade it.Will any mobo out there fit this case that can support at least a dual core or pentim ee extrerme 3.73gig.Thanks