Yes, more details: what about the download
servlet didn't work, or what didn't you understand, or...? Otherwise all anybody would do would cut-and-paste one of the examples you've already seen, and nothing has been accomplished. JavaRanch is
NotACodeMill -- we expect people to
ShowSomeEffort and TellTheDetails.
We can't read your mind to know what issues you're having--you have to help us help you! What have you tried so far?