For Linksys, this is generally 192.168.1.1 (Belkin: generally 192.168.2.1 – for other routers, check your user guide). You might also need to enter a username and password if this is set.
Linksys
Click on Wireless, then just underneath that click on Wireless Security. Set Security Mode to "WEP" in the drop down menu. Make sure the Default Transmit key is set to 1. Type a bunch of letters and numbers in to "passphrase", click on Generate, then you will see 4 different keys appear. Make a note of Key 1. Click on Save Settings then hit Continue.
Belkin
Click on Wireless, then either Encryption, Security or Wireless Super G, Security depending on your router model to get to these settings. You may need to place a tick in the "passphrase" box, but otherwise the procedure should be similar to above.
Your Router should now be configured.
PART 2: Set up your Laptop
I'll assume your laptop has wireless capability, runs Windows XP and your wireless is enabled. Get ready for some marathon clicking.
From the Start Menu, click Connect To, then Wireless Network Connection, then View Wireless Networks.
On "Related Tasks" to the left, click Change Advanced Settings, then click the Wireless Networks tab at the top.
On the list of wireless networks under the "preferred networks" section – click on your network's name (linksys) then click Properties. You will then see a section marked Wireless Network Key. Set this to Network Authentication "Open", Data Encryption "WEP", then type the network key from your router's key 1 in the "network key" section.
Make sure the Key index says 1. Click OK twice.
Congratulations – you are now more secure. Any other wireless device on your network will need to run through Part 2, or enter the network key each time they connect to your network.
Added MAC ADDRESS Filtering
If you want to be more protected, I'd also recommend setting up something called a MAC Address Filter on your router.
A MAC address is your computer's personal ID. You can set your router to only give permission to MAC addresses on its list. To find your computer's MAC Address - in Windows XP, click Start, Run, type cmd then Press Enter. Type getmac, and you'll get a Physical Address a bit like 00-69-XX-XX-9E-42. Make a note of this, then type exit to close this window. You'll need to get the MAC address of all devices you want to use your router.
Back in your router's window [see Part 1], for Linksys, click Wireless then Wireless MAC Filter. Make sure that wireless MAC filter is set to "Enable" and "Permit only" then click Edit MAC Filter List – enter the physical address of the computers you want to allow into your network here. Scroll down and click Save Settings and continue. Make sure to add the MAC addresses of all your devices that use your network.
Other routers will have a similar procedure, sometimes called "MAC Address Filter".
Extra link: For more Windows and Wifi fun, I've linked Microsoft's "Frequently Asked Questions" here: http://www.microsoft.com/technet/network/wifi/wififaq.mspx
13th September 2007