How do you access specific autofiltered list through VBA

[hydroparadise]

I want to create a form that has the same drop down list that is available when an autofilter is used a list. Right now im having to manually recreate these lists in a seperate sheet (hidden at that) and adding them in my own CBO. Ive done a little research into the funtions available within VBA for Excel, but became quickly overwhelming as to how there are. My question: is there such funtion or object that will do that for me and if there is, how would one include it into a form? Thanks