Question : Problem: Does new macbook / macbook pro support windows xp and vista 64 bit?

Does new macbook / macbook pro support windows xp and vista 64 bit?

and Does new macbook run on 64bit mode?

Answer : Problem: Does new macbook / macbook pro support windows xp and vista 64 bit?

The Core 2 duo are 64 bit processors.

You can install Vista 64 bit - but it takes a bit of work:

See here:
http://simpable.com/software/mbp-64bit-vista/