Can you tell a little more info. WPA enabled or not, so on. Update your driver if there is any and check to see what company maked the Wi-Fi chipset for the Toshiba notebook. I think that it should be Atheros cuz i have one too. I would suggest getting a Netgear Router, I have that and works perfectly.
My niece brought a Toshiba Notebook w/wireless chipset home, but it can't see my wireless network, which is established by Linksys BEFW11S4 v.2 router and all my other pc's & notebooks have Linksys Access Point antennas. What can be done so it recognizes and uses my network?