OK, I'll look at the other sites tomorrow, but for now Full Tilt timer script is ready. It is available as an add-on (see the new Add-On Scripts section):
http://www.autohotkey.net/~Xander/PokerPad/
Note, you also need to download the newest version to use add-ons.
Add-On scripts must be saved in the same folder that PokerPad.ahk or PokerPad.exe is in. Then you can load them by going to Options... (in the tray menu) which should show a window similar to this:
Anything you move over to the "Auto Load" column will be automatically launched upon clicking OK and everytime you start PokerPad. Conversely, anything that is moved from "Auto Load" will be unloaded upon clicking OK and will no longer be loaded when you start PokerPad.