How do i get pro tools sound out of computer and visa versa

I have pro tools le 8 with remote 002 desk and i would like the pro tools sound to come out of my computer (mac g5) and visa versa (i would also like the option of the computer sound to come out the speakers via the desk. Would be great if someone could help. also if any one can help with something else - to do with speaker wiring? i have a pair of speakers that need power and i managed to get it working out of a little stereo but they just have speaker wire on the end. i have a little pre amp that only takes phono, am i able to solder my wire in anyway i can plug it into the pre amp to then come out and into the o/p of the digi 002 desk. thanks again s

Maybe not a mic pre amp...

No preamp is going to work. Please put down the soldering iron and take a deep breath. Here is what you need: Since your speakers are not powered, you need a stereo amplifier(how about an Alesis RA150 or something similar, even a PA power amp). Then wire the speakers to the amplifier outputs. Next, you need cables to connect the MAIN outputs of the 002, to the inputs of the amplifier. To do that right, you need to know what connectors are on the amplifier(the 002 has TRS outputs). That should get Pro Tools sounds out of the speakers. Now to the computer sounds, get a mini plug to dual RCA cable(most any music store or Radio Shack should carry this and its the same cable that someone would need to plug an iPod into a home receiver). Now in your computer sound settings, tell it to route all sound out the computer audio output. Plug that cable into the Alt inputs on the back of the 002. Push the Alt to Mon button on the front of the 002 to listen to computer sound.