Thank you...and just so you know I'm running Windows 7.
In the Realtek Manager screen I actually don't get to choose either the Stereo or Quadrophonic option until after a jack is plugged in. The option isn't even there. However, once I plug a jack in a new tab opens up which has the dropdown menu to allow me to choose those setups.
Here is how I have it plugged in. My front speaker jack is plugged into the spot that is designated for "Lineout/Headphone." The computer manual says to use this line-out connector to attach headphones or speakers with integrated amplifiers which I think the Promedia 4.1 has (doesn't it?).
My rear speaker jack I'm plugging into the port for "Rear Surround Out" which according to my manual is for "surround sound connector to attach multi-channel capable speakers."
So I think I have everything plugged in correct. I should also note that when I plug those two jacks in I get a pop up menu which allows me to put a checkbox into what those speakers are that I just plugged in so I made sure to designate that they are front and rear respectively. What is very odd is that when I click the "Play" button to test the speakers I get odd results. When it highlights the LEFT FRONT speaker I get no sound. When it highlights the RIGHT FRONT speaker I get sound from the left front. Then the rear speakers appear to be working as they should. It's just weird that I get no sound to the right front when Quadrophonic is selected....and that the left and right are swapped.
Any ideas on what could be going on here? It is very frustrating and I'm not sure if the problem maybe resides in the Realtek software or even the integrated card....or if there is something wrong with the speakers. Again, I just upgraded to a new computer and the speakers worked fine on the old pc. My last option will be to get a splitter jack so I can plug both front and rear speaker jacks into just the one output for Headphones which I would think would transmit the Stereo sound to all 4 speakers. I'd really prefer to have true surround but I'm not sure where to go from here. Any ideas on why my front speakers are doing this under the Quadrophonic setting? Also tried the 5.1 setting (turned off the center) and that doesn't work either.