how can i ut up a server with a LAN internet connection and people can join because my server displays on local instead of internet (btw i do set dedicated server to internet not lan)
Well, unless your using a router or firewall, it should already be showing up, just nobody can find it, or wants to join.
Local disables Internet, but it will show internet servers hosted locally.
If your using a router or firewall, you'll have to configure it to allow correct port to transfer data. Check the JK readme/troubleshooting guide for futher information. on what port is required, and contact you router manufacturer, or ISP (some can help), if they provided a High speed modem/router.
Also make sure you have the latest version, is at JK2 1.04, interface version 7.