motherboard compatibility

hi,
can you tell me what's the difference between the 355478-001 and
326682-001 motherboards? I want to change the one (the 355478-001 one)
in my laptop (hp ze5730us) because it's broken beyond repair and i
don't
have money for a new laptop. On ebay I see more of the second type,
which however looks exactly the same - with the same chipset and
everything - as my old one. If I only knew if I could plug the old
celeron 2.8ghz (478 pins, 128 L2 cache) on a 326682-001.

well, thanx

do