[CentOS] A few questions about remastering

Hi,

I've searched all over Google, but couldn't find a proper answer to my needs.

I've installed CentOS 5.1 only with the packages I need and then made a few of my own.

Now, here's what I need:

a) To integrate my self-made packages in a remasterized DVD;

b) That the install process of the new version skips package choosing, i. e., when it reaches this stage it just installs all the packages of the new version;

c) And last, but not the least, how to remasterize the new DVD with the original packages I've installed, plus the ones I've made.

Any help would be appreciated.

Warm Regards, Mário Gamito