drop down with auto complete feature

hi all,

to fulfill my project requirement, i need to put <b>a drop down with auto completing feature.</b> i mean to say, i am using a drop down.... whenever i enter the first letter in drop down all the corresponding values should be there leaving remaining values( for examplet if i enter "a" in drop down all the corresponding names starting with a remain there in the list), if i enter the second letter then all the values which start with the two letters should be there leaving all other..... i mean to say the drop down should short list the display names when i enter the letters in drop down.

is there any facility in web dynpro to do that?

it is AUTO COMPLETE feature.....

please help me out in this regard.