Network with printer

Hi
please help
My computer will not connect to our printer through our network. My computer will connect to the internet and did use to connect to the printer but then stoped working. I know the network is working because on another computer it works.
If you need and details about my computer ect please say what you need
thanks.
PS i have tryed lots of things.

 

I DO KNOW HOW TO INSTALL A PRINTER ECT
i got a vista computer and the printer is an HP color laser jet 4550

 

So you have it shared on the PC to which it is connected?
Do an ipconfig on that PC (start>run>cmd>ipconfig)
Go to the Vista and go to Start>run> \\put ip here
An explorer window will pop up if everything is set up right & right click and connect to the printer.

 

No i do not have it shared as a printer. eg i mean i dont have my computer sharing the printer setting on the other computer. I tryed what you said and one first step i got two address? plus down the bottom it say media discounted and then tryed both address in step two and it came up with this error message window cant find address make sure you typed the name correctly, and then try again.
Thanks for you help so far
From Argo

PS after the printer stop working i even reinstalled vista that would of reset all setting i thought. but still it doesn't work. I through it might be some this with the printer but then the other computer prints to it.

 

The printer has to shared from the PC it is attached to.
Unless it has an ethernet (jet direct card) or print server attached.

 

HI
Yes it does have a HP JetDirect Card
Thanks
Argo

 

Find the ip of the jetdirect card, then..
Go to to the PC & start>settings>printers & faxes
Add a new printer > next
Select local and uncheck automatically detect & next
Select Create a new port, select TCP/IP & type the IP of the printer's direct card.
Next select HP and the model and it should install.

 

The Jet Direct card has a configuration that is usually available in the laser printers menu. You'll need to set up the card via the printers menu with the proper TCP/IP settings before you can do anything.

HP also has a utility that you can put on the PC that will "discover" jet direct cards on the network but I have found that the manual setup is just as easy.