No sound from my computer speakers with Pro Tools 9

[kalashatt]

Hello. I just recently installed Pro Tools HD9 on my iMac. After a few tries i successfully connected my Saffire 6 USB audio interface with Pro Tools by going to setup>playback engine and changing the "current engine" to Saffire 6.
This however resulted in total silence! I can record sounds through the interface, but I can't hear them! I didn't change the output!!
Before successfully connecting the audio interface i tried recording with the built in microphone, and i could hear the sounds playing back to me just fine! Did I do something wrong? Does anybody know how to fix this? I'm a TOTAL Pro Tools-newbie so I'm sorry if this is a dumb question...! Thanks in advance!

[kalashatt]

PLEASE never mind this! I got it figured out! The audio interface works as the output aswell, plugged my speakers into the interface and got it working! Strange how I've been trying to figure it out for so long and the moment I post a question here I finally figure it out! This thread can be locked! :)