Dns issues i think.

[avispa987]

Hello everybody.
I has a vps with ispcp installed.. i has a .com domain, i installed ispcp very well..! my sites are working "BUT" with a free dns website like afraid.org. I Has my .com domain, i created ns1.universe-xt.com and ns2.universe-xt.com from my domain's panel at registrar's web. later, like 2 weeks before, i changed the nameservers of my secondary domain xtudios.com.ar to ns1 & ns2. universe-xt.com ... but it seems not be working..

Maybe its problem of my registrar.. but i really don't know. i should do a modification to make my domains work with ns1 and ns2 ? (i has just one ip)