In short, you won't know till it's shipped.
2. There will be many varieties of Vista. My bet is the 64-bit version will not be your free upgrade (did you get the Vista coupon?)
For now, the answer is no. This will change as we near and pass January 31, 2007.
I recently purchased a Inspiron E1705 with a Core 2 Duo (T7200), 2 gig of ddr ram and 256MB ATI MOBILITY RADEON X 1400 . I am wondering if this system will properly support the 64bit version of MS Vista or if I will need to run the 32bit. From what I understand, the processor is 64bit, but there are several other components (bios, mobo, etc.)that need to be inline in order to fully support 64bit.