A impressora nao esta ativada, embora esteja conectada ao roteador, como liberar a impressao

When the printer is connected to the network the first time, the router will assign an IP address to it. To get the IP address that the printer was assigned, print a configuration page from the printer. It will show you the IP address on that page somewhere.
Using an Internet browser, type the IP address of the printer into the address line of the browser and press enter. It should bring up a printer configuration window.
Now, since each printer is different, I can't give you the exact steps, HOWEVER, here's what you are looking for:
Find a Network - TCP/IP configuration menu. Somewhere in that menu, it will give you the choice of setting a manual or static IP address versus a DHCP (Dynamic Host Control Protocol) assigned address.
You want to manually set the IP address to the address given on the configuration page. This would normally be 192.168.1.10x where x is any number between 0 and 9. The subnet mask will normally be 255.255.255.0 and the gateway will normally be the IP of the router, usually 192.168.1.1
Once the IP address is assigned permanently to the printer as a static address, you are now ready to add the printer to each computer on your network.
Add the Printer to Your Networked Computers
In Windows XP, follow these steps to add the wireless printer to your computer:

1. Go to Start, Printers and Faxes.
2. Double click on Add Printer
3. Click Next.
4. On the Local or Network Printer dialog box, choose Local Printer and UNCHECK the box that says "Automatically detect" the printer. Click Next.
5. On the Select a Printer Port window, choose to Create a New Port, and then under Type of Port, choose Standard TCP/IP port. Click Next.
6. Make sure the printer is On and Ready, and connected to the network. Click Next.
7. Type in the static IP address of the printer that you set in the steps above. Click Next.
8. It will then try to connect to that IP address. It you typed it wrong, or the printer is off, it will come back and give you an error.
9. If all is well, it should then ask you for the printer driver. If it is an older printer, it may already be listed in Windows. Alternatively, you can insert the CD for the printer, and find the Windows XP English version of the driver. It will be an .inf file most likely.
10. Double click on the appropriate INF file and then choose the driver you want to install. (the PCL 6 version is usually the one you should choose).
11. Click Next. It will install the driver and ask you to name the printer.
12. When it is done, click Finish. (You can choose to print a test page if you want).