How do I connect my pc to my router? There is no ether port in the back. Can it be done thru the sub?

try to power down both devices for a min than turn them back off sometimes they have to clear MAC address.

First try connection the Yellow ethernet cable from the rca modem to your computer's network connection. If you get a connection this way, then your modem will work with a ethernet cable. If not, then call Comcast for help. The modem ethernet out to computer port must be connected to the wan line of the router. Then you can connect an ethernet cable from your computer network connection to one of the 4 ports of the router. For wireless connections you must set up the router and wireless adaptor with the same settings to connect. Follow the routers directions.
Good Luck

Here are a couple of things to try. You're probably already done this a million times but I'll walk through the connections just in case. Hopefully these instructions will work with the Linksys router model you have.

Power the router up by plugging in the power supply. Plug in an Ethernet cable from your broadband modem to the port in the back of the router labeled "internet". Plug in another Ethernet cable from your computer to any one of the four numbered ports in the back of the router. Hit the reset button on the back of the router. You may need a sharp object like a pen or pencil to poke it. Reboot your computer. Open a web browser, such as Internet Explorer, and type in http:192.168.1.1. A window should pop up asking for a user name and a password. Don't enter a user name and type admin for the password. Hit ok. The router setup screen should come up. Click on the administration tab. Then click on the factory defaults sub-tab. The sub-tabs are in blue just below the normal tabs. Hit yes to restore factory defaults. Now see if you can connect to the internet through the router.

hello sir iam working for voip and iam a tech?
and u r using linksys pap2 which is not a router its just a phone adapter so it will work through a router so try this first
is ur modem is a modem router and u have 4 ether net port on it and u can able to access inter net through hard wired and connect this pap 2 adapter through one of the ether net jack on the modem router (ut starcom)>an dit has a fire wall which block ur voice signals so u need to open some ports on it try this link to open all ports and u need to try this with a pc which connected through hard wired on the modem router go to through this link
http://www.portforward.com/english/routers/port_forwarding/UTStarcom/UT-300R2U/Vonage.htm

and also disable the fire wall on the router screen and reboot the linksys pap2 and ur ut star com modem router also and connect ur phone directly to phone jack 1 on the pap 2 device if u have any issues let me know
and rate me solved if its helps thx

first connect the devices in this way
from us inter net modem to belkin routers inter net port connect a ether net cable rj45-->then connect another ether net cable rj45 from pc to -->ethernet port on teh belkin router>and reboot the router and modem if u r using cable inter net then immediatly that will work>and open a browser window type this in address bar http://192.168.2.1 u can see the belkin login screen and follow this link
http://www.gorge.net/help/wizard/belkin/f5d7230-4_pppoe.htm
rate me solved if its helps

ya u should have a router instead of a modem because modem provide only one ip address>and there is no DHCP server in the switch or hub>so buy one router which has 4 ether net port and connect it directly to the modem and connect ur two pc's behind the router then both will get a seperate ip address from the router both will go online
the connection is
modem-->ether net cable to the inter net port on the router-->and two ether net cable from both pc's to the 1 and 2 ether net jack on the router reboot all the devices>and modem+router+pc's then it will work>rate me solved if its helps thx

iam workinh for vonage and so its ur phone working then change the ether net cable>and and delete all the temp files and cookies and clear history>and also if still its not works change teh ether net port bet ween the pc to teh vonage devie>and still if its works then u need to check with the ether net card driver or ether net card>rate me solved if its help full

modem to inter net or wan port on this router>and u have 4 ether net od lan use any one -->ether net cable to pc's>and if u r using cable inter net then reboot the both router and modem u can get inter net access if its dsl contact linksys cause need to configure teh router rate me solved if its help full thx

chek weather u have a static ip address in the pc>and changed the ethernet cord and changed ether net port on the router to connect the pc>and reboot every thing

Ok I have done it a little different sometimes... try this approach... First connect up the DSL Modem to the PC via Ethernet.. Configure the modem from the PC using the Connect to the Internet Wizard... enter all ya ISP details Logon, Password etc. Once this is going OK.. Disconnect the Modem... and then connect it up to the "Router" using the "Uplink" port and when connect ya Modem to the router... then connect another Ethernet cable from Router to same port on ya PC. Then simply use the network setup Wizard to set up an Internet Connection and connect up via ya router thru ya modem... generally works for me....