My Cam and my Printer are both unusable with Vista

My Cam and my Printer are both unusable with Vista. But I have an idea for a solution. I put my old computer on a network. I know that this is hwo they use printers at work. I assume I can do the same at home. Can I do the same sort of thing with my cam?
For the printer, here are my results from the printer's manufacturer:
http://i67.photobucket.com/albums/h292/Athono/lexmark.jpg

I am sure I can set up the printer via a network but I do not know how to go about doing this. How does one set up a network?
For the cam, here my results from looking for answers from the cam's manufacturer
http://i67.photobucket.com/albums/h292/Athono/cam.jpg

I am told that the camera possess the neccessary hardware/software in order to be accessed over a network. Someone recommened, however, that I can purchase a multi-card reader and this will somehow help me. Does anyone know about this?

I found a program that allows me to use the cam over a network. This webcamXP :: the powerful webcam software for Windows is way cool.

Now the first thing to do is to set up a network. The Vista Online Help had a lot of information I did not need because already I have two machines connected to the internet by way of a router. It seems difficult to go through this information and know what I do need to do and what I do not need to do. So here I am. I have found out what the IP address is for the two machines and they are both connected to the same internet connection by way of a router. Now what? How do I make them see each other?