I have a Gigabyte M68MT-S2 rev 3.1 and i just ordered the Asus Xonar DX (http://www.asus.com/Sound_Cards_and_DigitaltoAnalog_Converters/Xonar_DX/) and i want to know that do i just simply slot it into my mobo or do i have to connect any cables. also if i plug in the astro a40's (without mixamp) will i get 7.1 surround sound?