It will work on 64bit system but only 32bit programs. The pro version will work on 32bit and 64bit programs. When you open Revo it should list only 32bit programs on your system.
Jim
My Computer
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Home Built
OS
Windows 8.1 Pro w/Media Center 64bit, Windows 7 HP 64bit
CPU
Phenom II X6 1100T
Motherboard
ASUS M5A99X EVO
Memory
Crucial Balistic 8gb DDR3-1866 CL9
Graphics Card(s)
MSI R6850 Cyclone IGD5 PE
Sound Card
On Board
Monitor(s) Displays
ASUS VE258Q 25" LED with DVI-HDMI-DisplayPort
Screen Resolution
1920 x 1080
Hard Drives
Two WD Cavier Black 2TB Sata III, WD My Book Essential 2TB USB 3.0
PSU
Seasonic X650 80 Plus GOLD Modular
Case
Corsair 400R
Cooling
Antec Kuhler H2O 620, Two 120mm and four 140mm
Keyboard
Logitech K120
Mouse
Logitech Marble Mouse USB, Logitech Precision Game Pad
Internet Speed
15MB
Antivirus
Norton IS 2013, Malwarebytes Pro Beta 2
Browser
IE-11, FF-27
Other Info
APC UPS ES 750, Netgear WNR3500L Gigabit & Wireless N Router with SamKnows Test Program, Motorola SB6120 Gigabit Cable Modem. Brother HL-2170W Laser Printer, Epson V300 Scanner