how to get dynamic chained select boxes

[shuma123]

i want to make select boxes chain on selection of one pass the value to the next they fetch data from database.like make,mdel,year select boxes

[Atli]

Hey.

Google has a lot of info on this subject. Have you tried any of the solutions suggested there?
This is a fairly common topic, so if you do a bit of searching you should find all the info you could need.