Server Migration

[macomb]

Can someone give a detailed proceedure of migrating from one server farm to another using Cpanel/WHM at both ends? The data/account transfer is understood, but I find the setup and transition of DNS propagation confusing. I'm switching from IP hosting to domain hosting. I have mirrored the accounts to the new server, and have setup the resellers, etc. All looks good... now what? Besides the server's nameservers, how do I handle the reseller's personalized nameservers, etc. to best ensure a seemless transition?

Any and all help is greatly appreciated.