How to setup DNS / confrim it is "active"

Okay i did not manage to follow the instructiosn that were on the site on how to set up DNS instead i found a guide that told me to backup my router settings then edit the DNS setting in note pad and the restore the edited backup. I dont know if my DNS is setup now? please advise

Do you want to know how check the DNS settings in Windows or on your router?

Basically i use a LAN i want to use COmado DNS server on all PCS so i need to know how to do this and confrim it is running on all PCS, so both windows and the router; also i could not follow the inscturtion on the comado DNS setup page since my router did not have the settings to select so i backed up my router settings then edited the note pad to configure the DNS serttings then restored it but i dont know if i am using the DNS server; plus one of my PCS on the LAN cannot acess the internet alhtough i can acess my router from thereā€¦ not sure if they are related

On Windows you can use the ipconfig /all command on the command prompt

also i could not follow the inscturtion on the comado DNS setup page since my router did not have the settings to select so i backed up my router settings then edited the note pad to configure the DNS serttings then restored it but i dont know if i am using the DNS server;
To see what DNS servers are set on the router I think you would need to look in the web interface of the router. It should be possible to find that in the manual of your router.

plus one of my PCS on the LAN cannot acess the internet alhtough i can acess my router from there... not sure if they are related
Can you tell what ipconfig /all reports for the DNS servers on this computer? Can you also post a screenshot of the Firewall logs (View Firewall Events)?

I Am wondering if i set up comodo secure dns correctly too.

Here is the landing page of my router

http://i48.tinypic.com/2zisav6.png

Here is the dns settings

http://i46.tinypic.com/2vbt2dw.png

And here is what ipconfig /all shows

http://i50.tinypic.com/2qa1v14.png

Have i set up comodo dns correctly?

Thanks for any replies