If im not mistaken the Program link settings is for quicklink programs only. If you want the calander quicklink to open youtube then thats where you go to make that happen (I personally think its useless and confussing)
If you want to change the task of the action screen it can't be done atleast to my understanding.
I tested this and set the calander to open youtube under the Program link settings and the quicklink did exactly that however the calander action on the action screen still opened Calander.
As far as to what to put in the action screen,
Text message, Picture mail, Email,
Contacts, call history, voicemail,
Opera, Wifi router, Internet sharing,
Camara, Camara Recorder, Album
Just a suggestion.
While you got this rom running maybe you could work on some flip clocks and digital clocks.
But Im getting ahead of myself. haha
Do you know of a place for me to get them.