A change of configaration

Check the IP Address of the 2833. I believe there is a gray button you can depress to print out a configuration sheet. If the wireless modem was also your router, you may have a different IP address range and will need to set the 2833 accordingly.

Have you tried Unplug Modem, remove battery, unplug wireless, Install battery in modem, plug in, wait for selftest, plug in wireless device, wait for self test, plug in computer, boot normally. If that fails Push and hold the reset button on the wireless device for 30 seconds. The Moden should have a reset as well, push and hold for 30 seconds or so. If I had the Make, Model of the Modem and Wireless device I could be more helpful.

This instruction is to setup Brother Laser printer 2170W in windows 7
Turn off Windows Firewall
To reset the printer:
Turn off the printer.
Press and hold the Go Button in front, at the same time turn on the printer from the right side. You will see three lights(Error, Drum, Toner) turn on. Release the Go button. The light is not blue and is off.
Now, Press the Go button 7 times. Wait for some seconds.
The three lights will turn on and off by themselves. The printer warms up and then stops.
Connect the ethernet cable to the wireless router and the printer
in the browser type:
http://192.168.1.1
It shows the device connected and its ip address.
Close the browser and open new browser
on your internet browser type in http://(ip address that you see as device)
click on "Network configuration"
user: admin
Password: access
click on "configure interface". Change it to "Auto Switching" Click OK
You are back in "Network configuration"
click on Configure wireless
Make sure it is "Infrastructure" and the "channel" is correct.
Also "Authentization Method" should be "open system"
Choose your encryption method
type in your password in "hexadecimal format" and click "submit".
If your password is ascii change it to hexadecimal with an online converter
Follow the instructions.
Wait until it prints the papers.
When it tells you to remove the ethernet cable, Do not remove.
Wait until printing is done. Turn off the printer and remove the cable. Turn on printer.
Now Print the printer status:
click on the Go button once to wake up the printer.
Now click on the Go button 3 times. Wait! it will print 4 pages.
Look at the last page
you will see the IP address of the printer.
go to your browser and type in http://( new ip address that you see on last page)
The last step is again in the "configure wireless" to "configure TCP/IP"
choose something like 192.168.1.198 the last 3 digits should be a high number. Close browser.
Now put in the CD and install the wireless Driver only. All Done!
Turn ON Windows Firewall

you should check two things:

1- Check in your windows Vista if the file and print sharing is enable in the "network and sharing center"
2- Try disabling your firewall in your windows Vista to troubleshoot. If your firewall is blocking the connection you might have tp add a rule to allow access from your windows 7 to your windows vista

The modem needed to be set to a 192.168.x.x network, and the SG300 Firewall WAN port needed to be set to a dummy IP on the same network for it's IP, and the specific 192.168.x.x address for the gateway and DNS.

Is your wlan & internet light lit?

4100 modem dont have interface and needs broadband connection in your network connection page
4100b modem have an interface and can access interface by the IPADDRESS of 192.168.1.64 and default gateway of 192.168.0.1
by accessing the default gateway using address bar of internet explorer browser it will be easy to configure..
FIREWALL: all AT&T modems firewall are safe and compatible to use to OS that has a built in firewall

First off can you ping the printer?
Then make sure in your network settings you set the printer for a manual or static IP address so it is not changing on you.
Try turning off any firewalls you have on your computer or network. On a firewall, you can ping the printer but it will not sent print data. You can write the IP address through the firewall to allow printing.
Log onto your web browser and type in the IP with the firewall on and see if you can see the printer. Then shut off all firewalls and do the same thing.
Also see if the printer has an IP filter enabled, that will stop it from printing also.

If you are connecting via usb you will need to install all software and drivers on your pc before plugging modem in. If you did install them already you may need to reinstall
If you connect through ethernet (RJ45 terminated network cable), you may have a firewall preventing regular acess to network.

solutions

1) restart pc and modem it may work just with this

2)USB only: reinstall all modem software, then restart all.

3)Ethernet only (network cable), |Restart all and disable firewall. If this does not work you may need to change network settings on your computer (fo example change IP from static to dynamic).

regards

No, I would suggest using a router with a built-in firewall. Internal modems don't have firewalls.