You can play with the steppers without using any programs by using Windows PowerShell (Win7 and above?): Click the windows icon in the lower left, type “cmd” to open a command window shell, then type “powershell” to launch the extended command mode. Turn on the controller and then enter the lines after PS> below.
PS> [System.IO.Ports.SerialPort]::getportnames()
COM5
This will list the serial ports on the computer, if you see nothing, or the com port is the one already on the computer, you may be missing the USB->Com driver, so load an appropriate driver (or load Ardunio). Enter the lines below to setup the port (change the COM and baud rate paramets to match the above com port), then open the port with the port.open command. Send GCode commands using the $port.WriteLine commands and you will (hopefully!) see the steppers rotate.
PS> $port= new-Object System.IO.Ports.SerialPort COM5,250000,None,8,one
PS> $port.open()
PS> $port.ReadLine()
start
PS> $port.WriteLine(“G0 X10”)
PS> $port.WriteLine(“G0 Y10”)
Ps> $port.WriteLine(“G0 Z10”)
PS> $port.Close()
https://en.wikipedia.org/wiki/PowerShell