I forgot the passwod that i set a year ago to secure my WI-Fi.Now what to do?

I was using a desktop since last 6 years.I purchase wireless broadband of BSNL.But as it was a desktop wireless feature was useless for me.So to restrict unauthorize access i changed the wifi modem password which i do not remember now.I bought a laptop which has a wi-fi feature.So,how to change or get my password... show more I was using a desktop since last 6 years.I purchase wireless broadband of BSNL.But as it was a desktop wireless feature was useless for me.So to restrict unauthorize access i changed the wifi modem password which i do not remember now.I bought a laptop which has a wi-fi feature.So,how to change or get my password for the wi-fi connection?
Please help me...
6 answers 6