Why do you need 2 NIC on the one PC, all you need is the DSL modem to 1 PC and a LAN (NIC) in each PC. you will need a x over cable that will work, just open the network connections on the Main PC then set up network, make a disc pop it into the other PC, and there you go.
The only way to do it with only one LAN card is to (if posible) plug modem into main computer using a USB cable and set it up to get on internet. Next you need to use a crossover ethernet cable to connect the computers together. Now run in network setup wizard (network connections) , just follow the prompts selecting "this computer connects directly to internet" etc. Run same wizard on other pc obviously selecting "this computer connects to internet through another computer ...etc.."
reboot the second machine and off you go.
Just for FYI if you don't already know the main pc must be on in order for the second pc to access internet.
ADSL is Asymmetric Digital Subscriber Line. basically ADSL has different speeds for upload and download. While SDSL (symmetric) has same speeds both ways (eg T1) Just look at DSL as the product and ADSL,SDSL,T1, ISDN as the flavors
i dont think there is any other way but to use a router cause if u make it where 1 system is the node for the whole connection that computer is on, and when that computer crashes the connection for the 2 systems goes down
definately, router is the way to go, but he doesn't want to use a router or a hub. this is the only way possible, unless his modem has routing functions, where he can have both the usb and ethernet plugged into each computer simultaneously and able to surf. The only modems I know that can do this is an actiontek (aol) and westell(bellsouth)
either way you get the same result
I belive that you can connect the Modem to the PC (any way you want) then connect the 2 computers together via crossover cable. Then you use Internet connection sharing on the main computer to let the other computer use it.
I have done this myself a few times when I had DSL and I had to login to get on the internet. It works fine, and if you have to login its a lot easier and/or cheaper than a router, but it is true (and sometimes a pain) that if the main computer goes down, they both go down.
You can find really cheap and tiny 4-8 port hubs on the internet, or even at Best Buy or whatever. I have seen them al low as $8.
Linksys and Dlink routers are pretty much the way to go for the money. You can choose between 802-11b and 802.11 g. 802.11 b max speed is 11 mbps and 802.11 g max speed is 54 mbps.
If you only reallly only plan on sharing the connection and not worried about sharing files between the computer then just get 802.11 b since internet is maxed out right now at 3 mbps. ( and it's cheaper) But as fast as techmology is growing it wouldn't be a bad idea to go with the 802.11 g (if you are looking towards the future).
Prices right now are around $50-$70 (802.11 b) and $70-$100 (802.11 g). Realistically if you do your shopping you can find the 802.11 g on sale for about the same price as 802.11 b.
You are gonna have to connect with ethernet since routers don't use USB without a USB adapter (more money) and setup is a sinch
802.11b is a wireless router, which means you will have to buy wireless nics ;p. If you want to use cables then you need to get a cheap 4 port router/switch. They are very cheap now. If you want to share internet betwen PC's this is the best option and allows for more security. The other option is to use one machine with two nics and do ICS as has been said.