There's a script called Launch Pad that comes as part Jeff Almasol's "Additional Scripts for After Effects CS4" pack.
http://www.adobe.com/cfusion/exchange/i ... id=1698043CS3 version here:
http://www.adobe.com/cfusion/exchange/i ... id=1242019Jeff also has another script called Script launcher:
http://www.redefinery.com/ae/view.php?i ... ptLauncherAnd I wrote a scripted palette years ago to launch scripts. But I haven't updated it and it probably doesn't even work with the latest versions of AE:
viewtopic.php?f=9&t=52