Specs:

HP Compaq CQ56-253SA
AMD Athlon II P360 Dual-Core CPU 2.3Ghz
ATI Mobility Radeon HD 4250
4GB RAM
Atheros AR9285 Wireless adapter
Realtek High Definition Audio

Looking to run Snow Leopard on it in a multi-boot along with an existing Windows 7 and Ubuntu install. Is it possible for my laptop? If not snow leopard then will leopard work?

Thanks !