yes you can use your network ip some setup network address as 192.168.0.1 or 192.168.1.1 just an example only. I don't know what os your running type in run command or dos prompt ipconfig /all hit the enter key. I'm a CNA & CNE and a computer tech i setup and install networks in schools & casinos and million dollar companies.
www.netsol.com is the main provider for all dns , might look at
www.dynip.com you can use it for free for 30 days its based out of canada.
Example Only
Code:
<address>192.168.0.1</address>
<localaddress>127.0.0.1</localaddress>
<loginserver>
<host>server.dyndns.org</host>
<port>5998</port>
<account></account>
<password></password>
</loginserver>