I have tried to get netsol to drop names and it takes atleast 2 weeks for them to intiate a purge. They won't even talk to about it for 90 days. In your case they may not be willing to help you since you want to move the names.
But like korkus2000 said, wait your 90 days (should be less then 150 typically). Then pray hard no one wants them. You better be really sure no one wants them! If just one person may find them useful you better play it safe and renew them and then move them. I have heard it a thousand times by now. People saying, "I was going to let my domains expire so I could sign up for them later at a new registrar." Unfortunately the domain(s) were grabbed by someone else and now they are gone forever. Don't let this happen to you. My fair warning to all.