Change registration form

I need my registration to only accept a certain set of numbers to keep others from registering.  How do I do this?  Example:  1-23456

You can set your system to an "invite" only mode.

There are several modules that have some features you might be interested in..

http://www.boonex.com/m/Ultimate_Referrals

http://www.boonex.com/m/Affiliate_Referrals_System

http://www.boonex.com/m/forced-matrix-for-affiliate-referrals-system

Look under Admin>Advanced Settings>Settings> drop down "other"

look for "Registration by invitation only:"

I hope some of these lead you in the right direction..

Michael