Ive searched throughout the forum and I am confused as to what I need to use for my application development.

Background: I am developing an application that requires each user to have a separate address.

I have installed bitcoind, and downloaded the block chain. I am using ubuntu server with the bitcoin ppa. I come across two services, bitcoind and bit coin-qt. Im confused as to what each does. Is it possible to generate address soly with bitcoind? I understand that bitcoind is strictly for use with the RPC? How would one generate an address using the rpc and bitcoin-qt

Please do not be harsh, I am completely new to bitcoind development.