Posted 29 June 2011 - 10:22 PM
From the sounds of it, your old router had wireless capability. Does the new one ? If it does, you may need to set up the wireless network in the router. That consists primarily of setting the SSID (The Network Name that shows up when you go to "Connect to Wireless Networks") and Wireless Security, which you usually want to set to "WPA2 Personal" with a passphrase of 8 to 63 characters. The passphrase can include spaces, punctuation, and numbers. You will only use it once for each device that connects, so I have my clients write it on a Post-It on piece of tape on the bottom of their wireless router for future reference. (If you can get physical access to the router the password isn't going to stop anyone.) Once that is done you will need to delete the old profile on your computer if you re-used the old network name. Then search for wireless networks from each device, connect, and give the dialog that pops up the passphrase. The specific instructions will change depending on the make and model of router, but there is usually a setup wizard.
If your new router does not have wireless you will need to add a wireless access point to your network. It's possible to do this by adding wireless to your PC and using connection sharing, but a better way is to purchase a wireless access point. This is basically the wireless half of a wireless router, without the router and usually without the 4 port ethernet switch that the routers usually have, and with a higher price tag. It will connect with an Ethernet cable to your wired router and spread Wireless LAN-ness throughout your home. It will need to be set up nearly identically to the way the router would be, from a wireless standpoint. Let me know if you need help finding or setting up one of these.