Reseller Domain Setup - Slave or Master?

[fbgirl]

WARNING: New Reseller... Help Please!

In setting up my client domains, I'm not familiar with how to designate the DNS zone setting for my clients in Plesk:

DNS zone has master DNS server type

Since I am a reseller and have several sites within my account, should they be designated as slave DNS Server Type or master DNS Server Type? (I've done a little research, but this is a little beyond my level of "geekness"... although I'm trying to raise that level, so any explanations along with instruction will be greatly appreciated!)

Thanks!

P.S. Since I am just beginning to set up my sites, this is sure to be the first of MANY of this type of question.

[NexDog]

Just use the default Master type. The slave zone is really to be used for sites using off-server dns.

[fbgirl]

You people are good! (...and fast!)