Hi again, On further research on Comcast, I assume they would supply the modem for a monthly rental fee. If you would rather save the monthly cost and buy a modem, here is the list of approved modems. You will find that searching the approved list, some of the modems already have a wireless router built in. I use this setup and suggest it to others as it makes things much easier in the long run, and cuts the cost of needing a modem and also a wireless router. I use the Linksys WCG200 which is on the approved list that works very well. 
This may seem like a stupid question but I am lost: I just bought a Dell laptop Inspiron 1545 and contacted my cable company (Comcast) to let them know I want to add internet to my cable/phone bundle. I did not want yo pay $149.00 to have Comcast come out and set it up so The Rep. told me all I need to do is buy a wireless router and I should be good to go ...... So what kind of router should I buy & what are the keys to ensure an easy setup? (I have a toddler and won't have much time to be troubleshooting ect.) Any advice is greatly appreciated!!! Thanks    
Setting up HELP!