space nut :
Thanks Guys looks like I will save $135.00
Keep in mind that an OEM version of Win 7 Pro 64-bit sells for under $120 - One advantage of Win 7 Pro is that it had Virtual Machine XP-Mode for older Win XP programs. If you are not using this feature (I do) then there is no big advantage.
And I must mention that upgrading to Windows 8 Pro (or Win 8.1 Pro) costs about $80.