Hello!
I am ready to downgrade my actual RHEL 4 for a cheaper server with CentOS 4.
I don't use any kind of cPanel.
I use compiled versions of Apache 2, PHP 5, MySQL 4 and Qmail (patched netqmail), and binary distribution for Firebird Database (2.0).
Would I have any problem? Will I loose something I acctualy have with RedHat (even dont knowing it?)

Looks like CentOS it's just a free clone of the RHEL, but I tough better ask for the experts before.
Thx