What are your incentive programs like?

What are your incentive programs like?

Surprise! Our sales team is still not on board with using a CRM program.  Old habits die hard don't they...
After many attempts to find a solution, it appears we will likely have to use an incentive program.  This is new territory for us, so knowing what to base our program is a big unknown.  I am curious:

How do you have your incentive programs organized (categories to base off of)?  
How do you make a level playing field when the roles of our sales staff vary (we only have 7 sales members)?

Thanks!