I have Plesk (Win) installed on a dedicated server and is playing around with it. However, what do i have to do to be able to use my domains I got registered at ev1servers.net?

You login to your registrar panel and setup your name servers there, then setup your server for that domain. You will of course need to setup your nameservers on the plesk box, etc before doing that.

Thanks, I figured it out earlier today - but thanks anyway :)