Modem to Router to PC to Xbox, Need Help

[Bennett7]

I've read the sickies and looked through the Microsoft website and it's still all a different language to me, so can someone please tell me exactly what I need so I don't waste my money.

I'm not sure how my modem is connected to my router. My router connects to my PC using an Ethernet cable. I only have ONE Ethernet port in my pc.

Now my question is do I buy a card like this:

http://www.overclockers.co.uk/showproduct.php?prodid=NW-024-DL&tool=3

Then plug a cable like this:

http://www.overclockers.co.uk/showproduct.php?prodid=CB-001-BE&groupid=46&catid=150&subcat=

Into the card in my pc and into my Xbox and they will both work, as long as my computer is on?

Or should I use this:
http://www.overclockers.co.uk/showproduct.php?prodid=NW-099-NG&groupid=46&catid=419&subcat=

Another option would be to get another cable from my router, but it's in a different room quite far away and It would be a lot of hassle pulling the cable through the walls, again


Sorry if it's been asked over and over again but there seems to be so many options and I don't want to waste my money on things that won't work.

All help is very much appreciated

 

[Bennett7]

Router is a Belkin 4-Port Cable/DSL wired Gateway Router.

Basically will this work:

http://alex-bennett.com/docs/netsetup.jpg

(sorry made it accidentally very big)

The router does have multiple UTP ports but I don't want to run another cable through the house.

I'm probably being really silly asking all these questions but I've never had much luck with networking