I'm not sure I understand exactly what you're asking, but I'll try:
If you have a domain, there's no need to fiddle with any of the username.freepgs.com stuff, just point your nameservers at plsk1.lvcs.net and plsk2.lvcs.net.
All the domains should be added through Plesk.
If you have a domain, there's no need to fiddle with any of the username.freepgs.com stuff, just point your nameservers at plsk1.lvcs.net and plsk2.lvcs.net.
All the domains should be added through Plesk.