Typing in "site:intel.com virtualization E4600" into google provides these two links:
which tells me that your E4600 is a Core2 Duo Desktop processor, and
which, when I clicked on "Intel Core2 Duo Desktop Processor" gave me a list of processors in this class sorted by whether or not they support virtualization.
At this point, selecting the processor is a straightforward matter of matching up what's on that page with what your motherboard supports.
As to actually swapping out the processor when the new one arrives, there are two widely-accepted techniques:
1) Use a static wrist strap and plenty of thermal paste.
2) Buy two processors and use the static wrist strap and thermal paste on the second one after frying the first.