Vault server on a 64 bit OS. No problem, right?

So this last week, I went to a customers site to install Vault on their server for them. No problem, I've done this a lot of times. I get to their office and I notice their server is running Windows Server 2003 x64. Uh oh. 64 bit software. I haven't dealt with it yet and I know Civil 3D doesn't run on it. So, off to the Autodesk website to make sure it's supported http://usa.autodesk.com/adsk/servlet/index?siteID=123112&id=8915326. Alright! It's supported for the vault server! Away I go. I pull out the disk, throw it in the machine, and up pops a warning. I don't remember the exact wording but it said something along the lines of:

Hey! You can't do that! Civil 3D isn't supported on a 64 bit OS! I'm cancelling the installation setup!

I know, I should have taken a screen shot of the message, but you get the point. So, I can't run the setup.exe for Civil 3D. No problem, there's probably another exe file for the vault just like there was in 2007. I browse through the install disk and find the vault msi file (that's the installer file). I double click on it hoping it will install the vault server and I get another nasty gram (again, I should have taken a screen shot):

Hey! You can't do that! Vault Server has to be installed through the setup.exe file!

Wait a minute, I can't run the setup file because this is a 64 bit OS but I have to run the setup file to install vault, which is supported on a 64 bit OS. Sounds like the left hand wasn't aware of what the right hand was doing.

Now, if you find yourself in this situation, there are a couple things to do. If you are on subscription, you can download the vault install files from the subscription center. I wasn't aware of that option so I didn't do that. The other option is to contact Autodesk Tech Support. They can e-mail you an alternative Civil 3D msi and ini file. Simply copy the install disk to a local drive, replace the two files, and away you go. You can also contact your reseller for assistance with this (if you don't have a good reseller, you can always check out CommTech www.ctcivil.com).