Your description lacks pertinent info regarding the environment that you're trying to install. So, let me establish that you're trying to setup 3 XP PCs in a workgroup and a HP 4000 as a network printer. All are connected by means of a hub (or switch). Although it's not clear that the PCs are now working in the workgroup, you ask a punctual question regarding "How to install the HP 4000" as shared in this environment".
The important steps are:
1. Your PCs should be configured as static IPs (class C) in the same workgroup.
2. Your HP 4000 should be configured with a static IP address in the same class. For details, read:
HP Jetdirect Print Servers - Configuring TCP/IP through the Front Control Panel of an HP LaserJet, Color LaserJet, or Business Inkjet Printer
In particular, under the "Basic Configurable TCP/IP parameters" section you should set:
Enter a static IP address in the same class C range.
3. In windows XP, under Printer and faxes your HP4000 should appear as TCP/IP printer. As well as it is important that under port settings you should have the HP IP address (set at #2) and the Port number as 9100.
Could be other smaller details, but the above is the sketch for your environmen't setup.
Trying to unweave, unwind, unravel
And piece together the past and the future,
T. S. Eliot
The HP printer is a color Laserjet 4500 that is hooked up to a Cat 5 cable network to a Unisys "hub or box" along with three computers on Cat5 cables. Windows XP has the driver, tried installing the driver for network and/or sharing but that is were I'm having the problem. Please help.