client-server hardware recommendations

hi! we have a project right now and we're supposed to configure hardware requirements for a fictitious company. i'm really not good at hardware so it would be really great if someone cud help!

i'm not sure if i'll be able to put enough information here so anyone could understand..just reply if there's any important information that i missed...

the "company" is supposed to be an international sports broadcasting company that would like to build a new library system for their stats and videos. we're supposed to work around the present hw and sw that they have and produce an efficient ( cheap but excellent ) specifications..

they already have:
-100-user license for a database server(Oracle 9i RDBMS)
-50 Pentium 3 pc's running at 933 MHz
-existing open-system architecture consisting of pc's connected thru WAN via TCP/IP and SPX/IPX, UNix and Windows2003 boxes and Novell Netware file servers

the "company" prefer that the proposed hardware follow the following specifications...

SERVER:
RDBMS
- specifically supports Oracle RDBMS 9i
- supports othermajor RDBMS (i.e. Informix, Sybase, etc) for future upgrade

OS
- supports Unix OR Windows2003 OR Novell Netware 4.11 higher

CLIENT:
OS
- supports WindowsXP OR any Linux flavor OR MAC OS higher

APPLICATIONS
- can accomodate Adobe Premiere and Photoshop, and Oracle Developer

MULTIMEDIA
- suports audio and video playback

NETWORK
- supports TCP/IP and SPX/IPX network protocol

thanks to anyone who could help. I like learning this stuff but i'm also out of time..please help me! :-/

Oh i forgot, here're the the technical req for the server and client hardware..

SERVER:
- supports 64-bit computing
- min 1GB RAM
- min of 200 GB hard disk
- DVD writer
- DAT tape drive (for back ups)
- 17" SVGA color monitor or better

CLIENT:
- supports 64-bit
- min 256 GB RAM
- min 80 GB hard disk
- DVD writer
- 19" monitor
- video capture capability
- tv output
-surround sound capability

please tell me if i need better specifications or if i could work with smaller requirements (like if it's ok to have 128 instead of 256 RAM)...thanks so mch!