I have 2 acer aspire netbooks and a very small ATOM motherboard I have assembled. AROS works great on all of them. Did you know the ATOM processor has a full complement of Core 2 Duo instructions (though it's single core at the moment but hyperthreaded), so it's very likely (haven't tried it yet) that the 64bit compile of AROS will work just fine on it..
Windows 7 x64 works great on the Atom, so I suspect that this will as well..
UPDATE: the ATOM in a netbook is 32-bit only at this time. Intel has non-netbook atom motherboards (the 200 series that include a full x64 instruction set) the 330 Atom is a 200 with Dual Core Support..
I am going to post a photo of an Acer Running AROS shortly..
