Hi !
I'm sorry to have missed this one. I do check NP daily, but 1-2 specific forums.
Anyways, changing nameservers is very easy.
1. Login to your control panel at resellers.co.in
2. Click "My Account"
3. Locate your domain using Domains->Search->Domain registration search
4. Click on "Domain Name - Click To Manage >> "
5. Click "Modify Name Server"
6. Change and Submit !
For locking/unlocking, there is a button on the domain management page.
I hope that helps.
Dongan/Ben - I am sorry that I couldn't address your issue at the earlyest. To make it up, I'll give you both one org/info free. I hope that'll solve our problems.
Thanks,
Pratik