On Win7x64, this script overrides the default Win+R behavior and places the Run dialog panel at center screen.

Anyone want to comment on what it does on WinXP, Win8, Vista?

<โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”>

#R::

Run, c:\WINDOWS\system32\rundll32.exe shell32.dll`,#61

winwaitactive, Run

WinGetPos,,,WinWidth, WinHeight, A

WinMove, A,,% A_ScreenWidth/2 - WinWidth/2,% A_ScreenHeight/2 - WinHeight/2

Return

<โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”>

I like this way better than having Run appear at the lower left corner.