Hosting a Web server at home?Need advice

I registered a domain “marksway.net” using NT 4.0’s IIS. I have recieved a notification from my ISP (dsl) stating “everything was a go” but I still can’t see my own site without typing in the IP address (static). Under TCP-IP/DNS I have marksway asmy host and net as my domain. (host.domain = marksway.net). Is this correct? How do I do an NSLookup? Any feedback would greatly be appreciated.