Is my Server 64 Bit Compatible?

While doing some recent beta testing (shhh), I realized that my lab is NOT 64 bit compatible.  🙁 I will have to do some searching around to find a suitable 64 bit lab that will fit into my budget (both initial and Electricity!). 

A quick and dirty way to check if your current ESX setup is 64 bit compatible is to putty in and run ‘cat /procs/cpuinfo‘.  Look for the LM flag to determine if you have 64 Bit extensions. (Long Mode)

Example of 32 Bit architecture 

 
Example of 64 Bit architecture.