[not]

Well first you need to know your PC ip:

On windows: click start -> run -> cmd -> ipconfig and copy the ip like 192.168.1.195

2є:
On your dynamode page type:

Custom server: mysampserver
ServerIP adress: the ip you copied 192.168.1.195

On the table:
Check your server port
At first row: 7777 || 7777 || TCP/UDP || 7777 || 7777

Now click on the boton save/apply



Now you have to add to your samp that ip you've copied: youriport like 192.168.1.195:7777
And for external players give the ip you seen at this page: www.miip.es like 80.325.123.70:7777