Ok...I need some help here.  I currently have a Dim 4600 that is connected to the internet via cable modem.  My kids have a Dim 4600 that is not on the internet yet.  My boyfriend will be moving in and he has an Inspiron 5100 that he also used with a cable modem in his apartment. (We use different ISP's).   We want to create one room (an office) in the house for all the computers.  I want all to have internet access and I want them all to be able to share a two printers.

 

Where do I start?  What will I need?