Download Autohotkey.

and here is a simple script that you can use. And I do for most of my macros. XD
Code:
Loop {
Controlsend, , 1, SRO_Client
Sleep 100
Controlsend, , 2, SRO_Client
Sleep 100
Controlsend, , 3, SRO_Client
Sleep 100
Controlsend, , 4, SRO_Client
Sleep 100
Controlsend, , 5, SRO_Client
Sleep 100
}
End::Pause