3.5mm-3.5mm cable between the output jack on your PC and the E11 input jack, then plug the HFI-780 to the E11 output jack.
My advise is for you to get your setup and enjoy listening to it, only getting back here if you actually have any issues or doubts related to your gear, otherwise you might be struck with "upgraditis"...
cool, im assuming output from the back or front wont matter?
"upgraditis", nice term. sounds legit.
any recommendations on how my PC sound EQ should be set? im planning to just leave it on default and just play around with it a bit