Ok, here's the deal
Two years ago I was using AOL (dial-up) for my internet service, but decoded to change to DSL (through a different ISP). At that time, all I was using for a computer was my main tower system (Dell Demension 3000), so I followed the installation CD, and had it hardwired directly to the modem. I then purchased a laptop pc equiped with WiFi, and purchased a router to include it on my home network. I have also added another laptop (Wifi) for my grandson to use as well on the network (I guess it's called a network, as they all work off of the same ISP).
So, I then had one "Main" computer (hardwired to the modem), and two laptops set up via router (Wifi), and all was well. However, the Main computer (hardwired) developed a hardrive problem (BSOD), and I had to send it off to be repaired. The hardrive had some kind of an error, and had to be reset back to the exact settings that came with the computer when I first plugged it in out of the box. NO Aol, and No DSL, but just the normal out of the box programs & adverisements (trial version everything), and Windows XP (Home Edition).
I want to hook the main PC back up to the network (using a hardwire), but I don't want to mess up the security setup that I have for the laptops (running from the router). I only have the two laptops running at this time. Can I run a hardwire directly to the router, and just let it download the settings automaticaly to the Dell Tower (No WiFi), or will I have to wire the Main PC to the modem, and setup another security for that particular computer. I want them all to be using the same ISP, but i'm not sure how to hook the main system back up after it's been cleaned of all the original setup for DSL.
In other words, which would be the best way to add the Dell Demension to the network, while it dosent have WiFi...........Modem or Router connection, and how do I do either.