I don't believe there is a way to save action bars, but you can make a macro to change your weapon and equip the necessary skills. There was a post on macros during B3 but here's what little you need to know for changing classes and actions.
/equip [Equipment location] [Name of Equipment]
/equip Main "Weathered Spear"
/eaction [Slot number] [Skill Name]
/eaction 2 "Second Wind"
You will only be able to use the macro out of combat. Action slot 1 will always be the basic attack so you don't need to set it everytime. Remember to equip the weapon first then the skills. Hope this helps.
Edit: I can spell
Edited, Sep 4th 2010 5:16am by Mictam