All, You must contact Technical Support. They can send out the disc to you.* Your Dell warranty must be current to get the Vista 64bit disc* Some 32bit software and peripherals may not run in a 64bit environment* Dell does not guarantee that there will be 64bit Vista drivers for all PC models* Contact Technical Support* Tell them to open DSN Document ID 158098 (Operating System Changes and Operating System Swaps - Dell Global Policy) and scroll down to the Policy section that discusses going from 32bit to 64bit. This is a Dell worldwide policy* Part Numbers they will need when dispatching to you -N174H Vista Home Premium 64 SP1J234H Vista Ultimate 64 SP1AJN198 Vista Business 64* If Dell Technical Support refuses, your only recourse is to escalate this through the Unresolved Issues form and explain that DSN 158098 is a Dell Global Policy and that the technician should have setup the order
I just spent the last two hours talking to Dell Customer Service, Dell Sales, Dell Technical Support and even Dell Financial Services.  I have no idea why I was transferred to Dell Financial Services but it appeared like nobody at Dell has the slightest clue what DSN ID 158098 was.  In fact, I was told by the people who tried  to help me that they had no way of looing it up with their system.  Basically, I have better access to their policy than they do themselves lol.  Per my understanding, this policy clearly stipulates that customers can upgrade or downgrade to a similar version of Vista but the people I talk to were pretty convinced that I was trying to write new Dell policy here.  I'm based in the US so I was hoping that I was going to have a little more luck with this but I don't even know where to start looking for help.  I mean, the people I talked to didn't even know where to transfer me to judging by how many different specialists I ended up talking to.   Anyway, I'm keeping hope alive and praying that one of the resident Dell Desktop Liasons takes pity on me and decides to help me.  I haven't yet received my system (it shipped yesterday) so thankfully I still have some time. I may give Dell another call when I have another hour or two to burn but I'm pretty exhausted right now and I thnk I may need a little more time before I take another crack at it.  If any of you community members have any helpul tips, it would be much appreciated.  Thanks and happy new year.  
Vista 32-bit to 64-bit upgrade....DSN ID 158098