how to share network printer to other users

Hi and welcome to SF,

1. Is the printer connected to a router either wired or wireless please or to a computer using a usb connection please specify?

2. Have you installed the drivers and software on each computer wishing to communicate with the printer?

3. Is UPNP enable on the router?

4. Is Netbios over TCPIP enabled on each computer wishing to use the printer?

So you have installed all the drivers and software on each computer yes?

Have you enabled file and printer sharing on each computer also this will need to be done on all computers.
Guides below:

Between XP and Windows 7
https://www.google.com/url?q=http://...T7jvsKjp4cH85A

Joining windows 7 computers to homegroup for file and printer sharing

Homegroup - Add Computer or Join

Between xp and vista:

Sharing Files and Printers in Vista - How to Setup Sharing Files and Printers on a Vista Computer

Between vista and windows 7:

How To Share Files and Printers Between Windows 7 and Vista - How-To Geek

After all the printer drivers are installed on each computer wishing to use the printer then you have to setup up each computer to connect to a network printer guides below for you:

For Windows XP:

How to Use Windows XP: Setting Up a Network Printer

For Windows Vista/7/8:

Adding a Network Printer in Windows 7 and Vista - Technology Help - Boston College

Please stop repeating yourself and start to follow the guidance i have already given you and report back what has been done please follow in full.

Let us know how it goes. I will add no further advice until you have followed all of the above.