(OFF THE TOP OF MY HEAD, so don't blame me if it's wrong)
Little guide for ya,
FIRST, go to the router (192.168.1.1) and go to the dhcp part and make that last number higher (like 192.168.1."110" were 110 is the number that you CHANGE IT TOO)
-First, go to run, then type "cmd" then hit enter
-Then type in "ipconfig /all" (without quotes, and I think that thats the command)
-Now, there is certain info that is important on this page, your going to want the IP adress, subnet mask, default gateway, and the DNS servers.
-NOW, go to control panel, network connections, right click your local area connection that your using
-Now, go down to internet protical (TCP/IP), highlight it and select properties, and fill in the info on that page (EXCEPT THE IP, Make it 192.168.1.102 (or anything between 101-109 for the last digit)
-Some people have more than two dns servers, you can add the other couple somewere else, but it somewere on that page (or links from it)
(That is all from the top of my head so don't blame me if it's wrong)
NEXT, your going to want to forward the port in the linksys router. So I would first suggest you see if the internet still works after we fck'ed with it so much. If it doesn't than just reset the router and your cable/dsl modem, if it still doesn't work than try a reboot, and if it still doesn't work that you did something wrong.
NOW, were ready to forward those ports. Go to the linksys page (192.168.1.1 default name and password is "admin" and PLEASE change the password if thats what it is). Go to the port fowarding/triggering pages, were ever that may be. Now just fill in the appropriate info and if you don't know the TCP/UDP (i think those are the names) then just leave it as both.
It's also a good idea to port trigger the same ports too.
And YOUR DONE 😛
Now you can also find all this info on that portforward.com site, but what fun would that be.
(Once again, this is off the TOP OF MY HEAD, so don't blame me if it's wrong)