I have a set of Bose Multimedia speakers: http://www.bose.com/controller?url=/shop_online/digital_music_systems/computer_speakers/companion_2/index.jsp

They have a cable that is RED and white on it (forgive my inexperience with the names of audio cables, I believe this is called RCA?) but the back of my new computer has more up-to-date audio ports.

The ports on my computer (and how they are labeled) are White [Side Spk], Pink [Mic In], Black [Rear Spk], Green [Front] Orange [CTR Bass] and Blue [Line in]

What kind of a cable do I need to get these speakers working with this system?Manual Guide is found on the site. Click on Details/Manuals and its a PDF file. Setting up on computer STARTS on Page 5.1. 3.5MM Stereo MALE to Two RCA Female 6 inch Cable Plug



2. 3.5mm Stereo Plug To DUAL RCA Jack Stereo Adapter




Also:
http://www.amazon.com/Belkin-Audio-Cable-Splitter-1-Mini/dp/B00004Z5CP/ref=pd_cp_e_2From the pictures in the manual on the webpage that you gave us, you should have the proper connector to connect to your computer. If you still have the original connectors, the two RCA plugs connect on the back of the right speaker. On the end of the wire with those two RCA plugs, there should be the small mini plug that goes to the computer.

HarryAs for the computer part, plugging the small jack into just one port will suffice, probably the lime green one, though my RealTek stuff and its software lets you plug it in anywhere, and use say the 'side speaker' or 'microphone' port as just a stereo speaker port. Meanwhile he hasn't returned...