HT5639 how to install bootcamp on windows 7 64 bit on late 2006 imac

Question

I ma trying to get Windows 2007 ultimate to install boot camp on my late 2006 24"CTO iMac. I am able to install the OS but when it come to install bootcamp it tells me that 64 bit is not supported on this machine. I need to be able to install it so all drivers get installed and the boot selector gets installed.
The machine I know is not true 64 bit and I wish it was a cheap way to make it 64 bit but I can't afford a new Mac at this time.
The specs are:
2.33 GHz Core 2 Duo
4 GB Ram
1 TB HD
256 MB Nvidia 7600GT
24" High Res Display upgrade
Thanks for the help and if it is no way then I am stuck with using the alt or option key at boot to select OXS after a reboot out of Windows 7.
Tim

Answer 1

Your iMac does not run 64 bit Windows. See the following table from http://support.apple.com/kb/HT5634
Mac model
Windows 8, 64-bit
Windows 7, 64-bit
Windows 7, 32-bit
Windows Vista, 64-bit
Windows Vista, 32-bit
Windows XP, 32-bit
iMac (27-inch, Late 2012)
5
5
iMac (21.5-inch, Late 2012)
5
5
iMac (21.5-inch, Late 2011)
5
5
4
iMac (27-inch, Mid 2011)
5
5
4
iMac (21.5-inch, Mid 2011)
5
5
4
iMac (27-inch, Mid 2010)
5
5
4
iMac (21.5-inch, Mid 2010)
4
4
iMac (27-inch, Late 2009) 1
4
4
iMac (27-inch, Late 2009) 2
4
4
4
4
4
iMac (21.5-inch, Late 2009)
4
4
4
4
4
iMac (20-inch, Mid 2009)
4
4
4
iMac (20-inch, Early 2009)
4
4
4
iMac (24-inch, Early 2008)
4
4
4
iMac (20-inch, Early 2008)
4
4
4
iMac (24-inch, Mid 2007)
4
4
4
iMac (20-inch, Mid 2007)
4
4
4
iMac (24-inch, Late 2006)
4
4
4
iMac (17-inch, Late 2006, CD)
4
4
4
iMac (20-inch, Late 2006)
4
4
4
iMac (17-inch, Late 2006)
4
4
4
iMac (17-inch, Mid 2006)
4
4
iMac (17-inch, Early 2006)
4
4
4