need help wtih dropdownextender and populating with db

hey all

im a little new at this

im trying to wrap my head around all this

ive gotten the dropdownextender to work

and ive pulled lists from the db

but how do i populate the dropdownextender with a select list from a db

i would appreciate any general overal strategies anyone could give

thanks

toy

or could someone point me to a tutorial?thanks
http://ajax.asp.net/ajaxtoolkit/Walkthrough/CCDWithDB.aspx?