running webserver

Hello all. Have a question regarding a webserver im trying to get up. I have the domain name lymb.com registered to me. Im running dsl with a dynamic ip address. I setup my domain name on zoneedit name servers which allows me to update my dns automatically. I have everything working going to my router and then i get into a little trouble. im running iis 5.0 on windows 2000 server. I can ping www.lymb.com and i reach my external address. After that i cant seem to get my website running. im using an allied telesyn router model ar220e. I setup the virtual server to go to my internal ip address with the proper ports opened. After that though im stuck. What else do i need to do to get the webserver running correctly???????
Thank you


-soia