With further research i found the solution to this problem without the help of any Dell associate.  in fact Dell associates really only seam to push your towards buying upgrading $ $ $ $  As I figured t would be, the solution was simple; go to device manager and uninstall the WLAN adapter. Restart computer....done .Restart forces laptop to reinstall automatically the adapter...... presto
I can turn on and off my WiFi connection with Ctrl + F2, but I cannot get anything to connect to the internet. I can plug into the router with dsl line and then I can brows the internet easily. the wifi connection shows to be good (4 green bars). All other computers in home are using home wifi easily. I have tried basic steeps suggested in general listing of troubleshooting BIOS shows recognition of mini card It all stopped working (all access to internet through wifi connection)one day after the laptop fell to the floor. Microsoft cannot even send its error messages unless I plug into the router with DSL line. Dell Inspiron B130 with XP OS
wifi connection but cannot get explorer or google chrome or anything to connect 
when with wifi