Multiserver 2?

[seikosantana]

Hi! I am really interested to the multiserver app. I tried it last night with my friend and it doesn't work. Sure I did something wrong. I have reading a few tutorials but they don't explain what to do.
What I did as server is

1. Download Multiserver
   
2. Copy the ddraw.dll into my lf2 directory
   
3. Start LF2 Multi Server v2.0.exe
   
4. Set the number of players to 2 (then it says that the server was started)
   
5. Start Little Fighter 2a
   
6. Choose network game
   
7. Wait for opponent
   
8. Tell my friend to connect to my IP without starting multiserver
   
9. It doesn't work. So I find my IP on whatismyip.com and tell my friend to connect to it
   
10. It still doesn't work.
    
11. Tried to set the player count to 1 and I connect to localhost, everything goes nicely.
    

So do I miss something? Is there a complete guide for this program? Do I need another external program with this?

Thanks in advance!