Thanks for the answers..some more details.!!

i live in ground floor. my landlord has Qtel router in first floor. i have cable between Qtel router up and a Dlink switch in my portion. To strengthen the signal, i installed Linksys acccess point which is connected to the Dlink ethernet switch by a cable. My laptop is operating on wi-fi. Available network shows now "Linksys" (without security) in addition to the existing router network name...Now.. tell me..what is the steps to be done..??

i want to set up new username and password..for new network name ""Linksys"" there is a separate user name and password is in use for the Qtel router..which i can access also..but the signal is very poor...!!

regards