Gravity platformer with circles

I am working on a platformer type game that in some areas is in many ways like a 2d Mario Galaxy. I want to have the player move around circles and jump from one to another. However, I have so far not been able to set this up. I have looked around for some tutorials, but to no avail. I also got the platformer template from DBA, but the mario galaxy one is mainly squares and the one circle is unable to have multiple circles. I am still figuring out much of gamesalad so any tips or advice would be helpful, even if its just a pointer in the right direction.
Comments
Darren.
jonmulcahy, yes that is pretty similar to what I have in mind as far as physics and such. Being able to walk around cirlcular objects and jump towards another to attach to it