Internet Drops not Connection now

Hi I am new to your forums but from what I read on various topics I can see some smart peeps are here to help...I have seen some threads on my issue but I am super new to computers. I can not get connection to the net but the globe in the bottom right is on so it seems I have connection. My lights are blinking on my Cable Modem as well. I have tried to unplug and reset the modem as well but that did not help. My Internet was working fine until about 1 week ago. The Comcast Cable guy came out and stated everything is ok with my line. Reasons why my connection is not working stated at least in Vista is DNS error or can't connect to ISP...I know this has happened alot but has anyone fixed it?

Specs:
Vista 64 Home prem. x64 SP1

Turn off the computer. Plug modem and router for 20 minutes. Turn on router and let it cycle for 5 minutes. Turn on router and let it cycle for 5 minutes. Turn on computer.

start
in the search box type CMD and hit OK
In black box, type IPconfig/all and see if your DNS servers are listed.

Do you mean this:

Turn off the computer. UNPlug modem and router for 20 minutes. Turn on MODEM and let it cycle for 5 minutes. Turn on router and let it cycle for 5 minutes. Turn on computer.

Ill try this tonight...thanks for the reply. If this does not reconize a DNS how can I get it to?

If you do the ipconfig /all and you do see dns info and a valid IP address then you may need a simple winsock reset. Which you can do by simply typing this in DOS, but make sure you run the cmd prompt as administrator first.

netsh winsock reset

That is the command to reset the winsock, this can often fix many small problems.