Lynn-You have a few options on how you want to get the second computer online. I would suggest buying a router and that way you will not need to pay RR for a second IP address each month. Also, a router is the best firewall protection you can have without any effort.
Along with the router you will need some cat5 ethernet cables to connect your second computer.
Hopefully the other computer is not too far away from the first? If it is I would suggest a wireless router, however you would also need to purchase a wireless NIC. Forget about usb you don't need it.
Here is a link to buy.com http://www.buy.com/retail/searchresults.asp?search_store=1&qu=router&loc=101 I just searched for router and it gave me a big list. I personally have a SMC router however I have heard great things about linksys. It looks like routers will run you around $50 or so. The manuals that come with the routers are very helpful and will lead you through the set up process. You can also look through manuals online by going to linksys.com if you have questions before you buy, etc.
If you have any more questions feel free to email me.
Mike 
gunther52@yahoo.com
>Hi all.I have RR,and called them
>to see about getting RR
>for my daughters computer she
>just got.Now I don't know
>anything about this.So here it
>goes.They at RR told me
>I needed to get a
>"hub",and connect that and then
>call them back.For some silly
>reason,I don't think that is
>all I need,is it?..lol..Our computers
>are not in the same
>room.Can anyone tell me what
>all I need to get.I
>will also get a second
>ISP addy.I'm just confused.They told
>me to call them back
>after I get the hub
>all hooked up.Well I don't
>even know what one is
>or even how to begin
>to hook it up.Our computers
>both have ethhernet cards in
>them,and we have USB ports(I
>don't know if this is
>of any help or not.We
>both run windows XP home
>edition.Okay,phewww..thats alot.Thanks to anyone that
>can help me and explain
>it in simple terms.I will
>wait to hear from someone
>before I purchase anything.
>Lynn