Windows Going from 32-bit to 64-bit Vista

I have Vista Ultimate 32-bit, but want 64-bit. Do I have to buy an upgrade or the full version or is something easier like a patch?

 

you have to get a 64-bit disk. any version will do. borrow from a friend, or i think you can get microsoft to send you one for little more than shipping costs. then install with your key.

doesn't ultimate come bundled with both 32 and 64 bit disks though?

 

64-bit disk, Microsoft charge extra moneys. For the disk.

 

I didnt know the license keys were cross architecture, that's pretty handy.

 

There in lies the problem, I have a technician copy with no Key.

 

Your need the disc, and your need a new install.
No upgrade possible from 32bit to 64bit.

 

requires a call to M$ and u require the key for them to send out the 64bit disc.