On the hackintosh front, Sony's Vaio P seemed a bust: its GMA 500 video chip had terrible drivers even in Windows, and no support at all under Mac OS X. Insanely Mac forum posters ryuu123 and maccosmo, however, claim to have cracked the problem, and offer instructions on how to get Leopard running on the minuscule 1.5lb netbook.
Is it faster then VISTA?
"yes" - but you can't run 3d apps/games because of the missing gma500 drivers. apart from that - everthing is faster than vista. but the fastest os on the machine is windows xp.
Does the 3G modem works?
no - i can't find suitable drivers
I should also mention there's no ethernet, wifi, gps and as I said no 3g support - and the audio works not as expected (the audio sounds distorted).
On the OSX Netbook Compatibility Chart it goes.
Its a complex install and not for the fainthearted: if you don't know what "installing a kext" means, don't take your coat off just yet. Maccosmo writes that it's easier than it looks -- "installing os x on a vaio p is easy if you done it once" -- but until non-USB networking is available, it's not ready for everyday use.