Will a dual core cpu fit in my motherboard?

It's a nasty OEM board, I couldn't find many specs except that it's socket 775 and it's got some kind of SIS chipset which only supports some Pentium 4 CPUs. So I think the answer is NO, it will not support a dual core.
No offence, but you really need to upgrade, that thing is crap :S

Can u find a cheap mobo what can support dual core and has an agp slot