They will send you an email with a username & password for whatever register it is in at the moment, you can manage it as normal but you will "usually" have to wait 60 days before you can transfer it to a different register.
I think with NetSol names you can do it sooner but you "may" end up loosing a few months on the name by doing so.
It could end up being at one of many registers.
an example email is below
Please note the following instructions with respect to your Registration of DomainName example.com through SnapNames. Your Domain Name is Registered through YNOTDOMAINS.COM (one of many) as a Registrar. This mail will assist you in jump-starting your relationship with us. Please read through this mail, and store it for future reference, since it contains important information.
Order Details
Order ID: *******
Domain Name: example.com
Expiry Date: Tue May 20 18:42:32 GMT 2008
Managing your Domain Name
You can Manage your Domain Name (modify the Nameservers or contact information) by logging into your Customer Control Panel. Please follow the steps below to Manage your Domain Name.
> link to register <
.