Can someone help me? :) Need to get rid of NOISE!!

[Nutdotnet]

Okay I am sure I have the lowest class system compared to most of you but I still would like some help.
I have a Sony Receiver with DTS/DD plus Sony Speakers. I have a Sony DVD player. Aswell as a Sony Vega Television. The stuff is not top-of-the-line but it is okay. Here is my problem:
I am trying to hook up my computer to my receiver to listen to MP3's. I am using monster cable for all my connections. When I hook up the cable from the computer to the Receiver I get A LOT of background noise. I had this happen with a friends set-up (AIWA Receiver) and we found out that it was the Coax Cable for the cable TV box. So I unplugged the Coax Cable and the noise stops. So I figure that the noise is between the Coax Cable and the Computer cable. But... I can plug in the Coax Cable to my TV for Cable TV and Unplug the The S-Video Cable from the TV and the DVD player and the noise goes away again. Plus I also have to leave the Audio connections from the TV to my Receiver unplugged when I am using the Coax Cable, but can leave them in when using the S-Video for my DVD. I really, really, really do not want to unplug the S-Video cable everytime I want to use the Speakers for my computer.
Anyone have any suggestions?? I imagine that this has happened to others as this has happened to me and my friend.

Thanks in advance
Sorry if there is any confusion. LOL

Here is another post I had written in a different fourm maybe it may clear anything up:

Lemme try to explain my problem again. My problem is the background noise. I have to either unplug the S-Video cable from the DVD player and the Audio cable from the receiver that are plugged into the telveviosn OR the Coax Cable for Cable TV from the Television in order to stop the noise coming from my computer when I have the computer connected to the receiver. It sounds odd, i know But I am hoping there is a way to fix this.
So does this help clear some confusion up??
Thanks again

 

[outlamd]

Have you tried using a different input on your reciever? Which one are you using now for the computer? If you have an external equalizer, you could try the tape monitor on that. Just a few suggestions.

 

[okydoky]

Try to put all of your equipment on the same electrical circuit in your home so the components can share the same common ground. Be sure the ground on your outlet is working... I've seen this work before. I beleive it to be called ground loop isolation....

 

[Nutdotnet]

Yeah okydoky I think you are on the right track. Another guy mentioned to me that I need a "Ground Loop Isolation" Cable to hook up my comp to my receiver since they use different types of power. Hopefull this will work