Router Help!!

I have a pc and a xbox right next to each other and a modem in between problem is i have to constantly plug and unplug cables and i cant get on both at once so i looked at routers and found this http://www.bestbuy.com/site/olspage.jsp?skuId=8741365&st=WRT54G&lp=1&type=product&cp=1&id=1202648529130any recommandations? (my ISP is comcast with a 4.30 download speed and a 3.00 upload speed mbps)

If you have 2 ethernet ports on your PC's mobo, you can use your PC as a router... Attach the ethernet cable from your modem to the PC, then attach an ethernet cable from your second Ethernet port to the 360... then do this:

For vista... Network and Sharing Center > Manage Network Connections > Right Click the connection you are connected to and select Properties > Sharing Tab > and select the option to "Allow other network users to connect through this computer's internet connection."...

I am doing that right now and it works fine...

i tried the whole ICS thing but i couldnt seem to get it to work sence i only have a pc and a xbox if i could do it that way it would be nice but whenever i try to im ethier doing something wrong or not doing something because it wont work a step by step guide would be nice :D