Ok, so when it comes to networking I give myself 4 thumbs down. lol I will try my best to answer the questions.
We have DSL. Our 2WIRE modem is set up in our kitchen (approximately 9-11 feet away from our desktop computer). The kitchen is the only room in the house with a phone jack direction in the wall, therefore we have to leave it there. So we have always run off of a wireless connection since we've lived here.
We only run off of this one main computer (occasionally the laptop too if the hubby logs into WoW while I'm on the desktop). As for trying another game, I don't have another game that needs internet connection.
Last night I was able to run the modem out to the computer for a direct connection with the ethernet cable. I did this while I was on the phone with ATT Tech Support as they were resetting the modem. After this I was unable to connect to anything (Internet, WoW, Curse Client, Steam, etc...) through a wireless connection. Thankfully I was able to eventually make that connection by changing some information around on my computer and with our wireless adapter (I guess that's what you call it - NETGEAR). It's the thing I have plugged into a USB port on the computer to pick up available connections. It was picking up that we could have the connection but it was actually connecting at first.
I can go onto this site (it's just a bunch of numbers) that ATT gave me and it allows me to look at my connection info and more. {System, Broadband Link, Home Network, Firewall, etc...} So I can change stuff there if I need to.
Also, I would love to chat on vent!! But I woke up sick and can barely talk at all and my head is stuffy I can barely hear myself think. If that's even possible. haha