Confirmation on old tech PC to receiver surround sound

Hello,

Hoping to get some help on a PC to Stereo receiver connection based on my constraints. Got an old Asus P5QL-VM EPU motherboard that has the orange, black, and green lines out. Capable of 7.1 channels (I only want 5.1). For the receiver, I have an even older Sony STR DE335 that has no digital inputs whatsoever. I have never hooked up a PC to a receiver before but from the research I have done it looks like I use 3 3.5mm to Red/White rca cables and connect them like:

Green port on PC to both Front RCA connections on Stereo
Black port on PC to both Rear RCA connections on Stereo
Orange port on PC to Center and Subwoofer connections on Stereo

sound right?


Other questions:

Will I have to remove my video card I have installed (and connected to my HDTV via HDMI) in order for motherboard sound to work? Meaning I won't be able to use the video card HDMI and sound to the TV and the motherboard sound to the receiver?

Is there likely configuration in windows that I will have to do to get sound porting to the right channels?


Thanks in advance for any help provided!