You can install boot camp 3.0 on windows x64 santa rosa.
1. open command prompt in administrator mode
2. type "net user administrator /active:yes" hit enter
3. log out then log in as "administrator"
4. then open cd and navigate to "bootcamp/drivers/apple/"
5. run "bootcampx64"
6. once done reboot, logback in and turn off administrator account by entering "net user administrator /active:no"
viola! boot camp 3.0 on x64
Thanks to the instructions from d5280, I was able to install Windows 7 Ultimate x64 with Boot Camp 3.0 build 2058 on my Santa Rosa MacBook Pro and it has worked perfectly (so far, at least). I wanted to explain the process in a bit more detail to make it easier for less technical users like myself. I used:
Windows 7 Ultimate x64 RTM (release to manufacturing) version burned to DVD.
Snow Leopard 10.6.1 and Snow Leopard DVD. Mine contained Boot Camp 3.0 build 2058 (I only discovered the build # after it was already installed).
Steps:
1. Run Boot Camp Assistant to partition your drive and install Windows 7 x64. There are no special steps here.
2. While the Boot Camp instructions tell you to insert your OS X DVD, you first need to follow the steps given by d5280, which I will elaborate here. ayeying noted that this was the same as disabling UAC (User Access Control), but I tried just disabling UAC without following d5280's method and Boot Camp wouldn't install. Leaving it disabled, I then tried d5280's method and it worked. Not exactly a controlled experiment, but it can't hurt to do both for the purposes of installing Boot Camp (don't forget to turn UAC back on if you want to use it).
A. Make sure you're logged into Windows 7 as an administrator. If you just installed and setup one user account, you are an administrator.
B. Open command prompt (Start menu > type "cmd" in search box).
C. In prompt, type "net user administrator /active:yes" and hit enter. It should tell you the command was successful.
D. Log out. On the login screen, you should now see 2 accounts: (1) the account you setup when installing Windows and (2) Administrator. Choose Administrator.
E. Once logged in, insert your OS X DVD and navigate to the folder "bootcamp/drivers/apple/" and run "BootCamp64". d5280 referred to "bootcampx64", but it was called BootCamp64 on my DVD. The installer will run and install all device drivers for your Mac.
F. Once this has completed, restart and login to your account. Again open the command prompt and type "net user administrator /active:no" and hit enter. Again it should tell you the command was successful. Now the Administrator account will no longer appear as a login option.
3. Done.
Hope that helps someone.