Thank you for helping me. The 'puter has the following ports: 3 USB 2.0 ports,1 IEEE 1394 (FireWire 400); a VGA monitor out port; S-Video out. I am using the VGA port as I have a dual monitor set up.
As for the MacBook, yes I do have port called mini DVI, I believe. I think that Apple makes you buy an adapter to make it work. May I ask which adapter I would need, as they seem to offer a choice of at least three?
Thanks again for the help.
Oh, BTW, do I need to buy an upgraded sound card?