[sentinix-list] How to remove a package without affect others

Hello all,

I am very new to this great distribution and I am wondering what kind of
package management system Sentinix is using? And how to remove a package
without affect others?

BTW, is there any site you can download packages for Sentinix? 

If I want to create a smaller size cd, what are the minimum packages I
should keep there to compile from scratch?

Any advice will be highly appreciated! 

John Li