Hello. I have a domain registered with Dotster and my NameServers point to Verio who is my webhost. My MX Records at Verio point to Appriver who handles my email. Id like to get Verio totally out of the picture and just host my site at Dotster and still keep the email at Appriver. However, Im not quite sure the order in which to change the various settings.

Do I just change the Name Servers at Doster to point to Dotster instead of Verio and then use Dotsters DNS to point the MX Records to Appriver? Would I then disable the MX Records at Verio? What about propagation of these changes...would I lose email traffic? Do I need to change the TTL? Im really not sure about the order of the steps.