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Nope.

No, that is not possible. It must be a 64bit OS. Doesn't matter if it is XP 64, Vista 64 or Windows 7 64.A 32 bit OS can't address that much RAM.

32 bit OS's can't use more than 4 gB of RAM - it's a limitation of the 32 bit program.You can shift things around a bit, but basically you'll only be able to use 2.5 to 3.5 gB of the RAM. The rest is reserved for system functions that you aren't able to access.Here's a link that explains it for Vista (it's the same for 32 bit versions of Win7): The system memory that is reported in the System Information dialog box in Windows Vista is less than you expect if 4 GB of RAM is installed- John

Jens Peter Karlsen said: A 32 bit OS can't address that much RAM.With respect, you are wrong about that. 32-bit server versions of Windows have long been able to address more than 4G of RAM. They use a kludge which involves switching pages of physical RAM into the 4G range. Google 'PAE' to find out more about this.However, although some 32-bit OSs can indeed address more than 4G of RAM, the currently released W7 cannot, which is what the questioner asked.

While it is correct that 32bit server versions uses a kludge to utilize more RAM it does so as you say by switching pages of RAM just like you do with a swap file on the harddrive. It doesn't mean that it can address more than 4GB of RAMat a time.