Can not run Snow Leopard in 64 bit

Hi there,
I recently bought the Snow Leopard OS for my iMac 2007/2008 model.
Here are the specks on my iMac:
Model Name: iMac
Model Identifier: iMac7,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2,4 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 4 MB
Memory: 4 GB
Bus Speed: 800 MHz
Boot ROM Version: IM71.007A.B03
SMC Version (system): 1.20f4
My question is, how is it that I can not run Snow Leopard in 64 bit – it is an Core2Duo which to my understanding is also an 64 bit processor.
To add to my confusion I’m running the Windows 7 64 bit version on the same iMac via VMware-fusion.
Had some help on this issue before, where this mac-person found an small program on the internet that is suppose to analyse and change some settings so it runs 64 bit - but my model was not supported by some odd reason.
Is here anyone that can reply on my question??
Thanks
Arni

Welcome to Apple Discussions.
I have to admit I'm a little confused. I don't believe your iMac is a Core 2 Duo. The only Core 2 Duo in 2007 was the mid 2007 24" 2.8 GHz processor, all other 2007 iMacs are 32 bit. I would recommend going to this site to see what the specifications are for your machine, simply type in the SN and it will let you know.
http://www.appleserialnumberinfo.com/Desktop/index.php
Regards,
Roger

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Unfortunately you got caught up in the minor miracle of Rosetta. Originally licensed by Apple when it migrated from the PowerPC CPU platform that it had used from the mid-1990's until the Intel CPU platform in 2006, Rosetta allowed Mac users to continue to use their library of PPC software transparently in emulation.
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2. If your Mac will support it, partition your hard drive or add an external hard drive and install Snow Leopard into it and use the "dual-boot" method to choose between your PowerPC software or Lion/Mt. Lion - not available on the newest iMac;
3. Upgrade your software to Intel compatible versions, or find alternative software that will open your data files;
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[click on image to enlarge]
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http://forums.macrumors.com/showthread.php?t=1365439
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NOTE 2: Computer games with complex, 3D or fast motion graphics make not work well or at all in virtualization.
And according to the author, it's not forbidden by the client EULA. Can't say for sure if the same method will work for Mountain Lion, though. He may have updated it here or on MacRumors, but I'm not aware of an update, or whether one is needed.
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Niel wrote:
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(69744)
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[click on image to enlarge]
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ecvoyager wrote:
Pancenter,
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shannon112 wrote:
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Can not run Snow Leopard in 64 bit

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