What you probably want to do is first create a trigger, be it an object to click or a key to press. When this trigger is activated, have the world property "Speed" be set to 0. This will cause the world to pause and as far as I know, any actions that are set to take 0 time will still run. You can have all thoe actions happen and all is well. To have the world run normally again, simply set the world speed to 1.
More info once I install Alice on this crummy computer that I'm being forced to use.
'Apple Macintosh' - An anagram of 'Complaints Heap'
M.A.C.I.N.T.O.S.H. - Machine Always Crashes, If Not, The Operating System Hangs.
You're *such* a mac person.