So AutoHotKey does have the ability to take control of your mouse and issue clicks at certain locations...

I use the 'w' key for this. Here's the snipet of code that swings the mouse to the appropriate locations on 4 windows and then returns my cursor to roughly center on my main monitor:

[code:1]
CoordMode,Mouse,Screen

~w::
KeyWait, w, D
IfWinActive, World of Warcraft
{
BlockInput, MouseMove
SendInput {click -1280, 380}
SendInput {click -1280, 380 right}
sleep 150
SendInput {Click -1280, 980}
SendInput {Click -1280, 980 right}
sleep 150
SendInput {Click -480, 380}
SendInput {Click -480, 380 right}
sleep 150
SendInput {Click -480, 980}
SendInput {Click -480, 980 right}
sleep 150
SendInput {Click 980, 675}
BlockInput MouseMoveOff
}
Return
[/code:1]

The 4 alts are all sharing a 20" (1600x1200) monitor to the left of my main monitor.

It take a little practice getting the corpses placed properly, but it's definitely neat watching all four alts properly compete for looting access. (I still leave everything FFA.)