im not really good with audio and have basic to modereate electrical skills. what im trying to do is set up a sound system but its not coming out too well. I got about 5 stereo speakers that i got from two different stereo towers. What i want to do i connect them to my compueter but have no idea how. i know ill need an amplifier of some sort but dont want to spend too much money. What do i buy and how do i ste thsi thing up. thx