Help Me!!!

Alright well.. Anyway heard of SvSip?
Well I wanna download it onto my R4. Now downloaded it, got the Voipbuster and everything.. account made, all set. I changed the configuration settings too. So when I click, to play it it goes to a red page saying "Error!"
So of course.. I'm mad.. scared.. and going. "HELP DX"
*sighs* So, then when I click on a youtube vid, the guy says I need to open a port 5060, onto my wi-fi..
I dunno how. Like, i know how to make one, for the connection network on my computer, and on my firewall. I'm not sure, how to get it onto my wi-fi, but I'm sure I can figure that part out.
What i need help on is the info on the port 5060.
The Ip adress, and everything else. hold on lemme list it;Description of Service:
Name of Ip Adress of the computer hosting this service on your network:
External Port for this service:
Internal Port for this service:PLEASE HELP ME QUICKLY!!!! :'(

IP address would be find by typing this in command prompt:
ipconfig /all
For the rest, I dunno. Sorry.

IP address is the address assigned to your DS. internal and external port are both 5060.

Ooh.
XD Sorry, I never truly understood. i got the part of 5060 being, both internal and external. I just wasn't sure, thanks for that.
So.. Lemme get it straight.. The IP Adress, is just that little code on the back on my ds..?

No, that's likely a serial number.
IP Addresses are assigned by your router. Your DS could have different IP Addresses at different times depending on how your network is setup. What brand/model of router do you own?