Mac Pro (Intel) and OS X Server

Hi, everyone.

I'm pretty new to the Mac world. But I've jumped in with both feet. I am now the proud owner of a MacBook Pro and just bought an Intel-based Mac Pro to use as a server for my small business to replace my Linux-based HP server.

My problem is this: I can't boot from the Mac OS X Server disks that I bought from my Apple reseller. The label on the DVD (I have both DVD & CDs) says:

Mac OS X Server
Install DVD
Version 10.4
0Z691-5228-A

Nowhere does it say anything about being for PPC, Intel, Universal, nothing. It is copyrighted 2005 per the label.

Everytime I try to boot from either the DVD or CD, my machine won't boot from it. I've tried holding down the 'c' key, also holding down the Alt-Apple-P-R keys, but nothing works. I can boot from the Mac OS X disks just fine. And I can get to the install folder from the DVD disk after installation of the regular OS, too. But I'd like to do a clean install of OS X Server, if possible.

Any help would really be appreciated. Thanks in advance...