Vista Home Premium Retail x64 for a small fee??

[malachi]

Im looking to buy Vista Home Premium Retail to upgrade my main computer but I can only find the 32bit versions. I read on the MS website that if I purchase the 32bit version I can upgrade to 64bit "for a small fee" Does any know how much this small fee is?

 

[malachi]

They send you a new CD then. I thought they would emailed you a new CD key and it would install off the disk. How long did it take to arrive?