I installed VMWare Server on a 64 bit XP machine.
After creating a new virtual machine (for XP 64 bit guest OS) and adding a CD pointing to XP64 setup ISO, VMWare doesn't let me run the virtual machine:
Attempting to load an x64 operating
system, however this CPU is not
compatible with x64 mode. Please
install a 32-bit X86 operating system.
What gives? (My host is definitely a 64 bit machine)
Best Answer
You require Intel-VT or AMD-V support for your processor in order to run 64-bit Guests.
If your processor supports it, it can usually be enabled through the BIOS. If you can't find the option there, chances are it may not be available.
Some more reading here