ok this might or might not work, but could be a solution to your problems.
create a text file in gedit in your home directory called:
start_wlan.bat
now paste this inside and save:
-------------------------------
echo 'Setting Specific Wireless Network Access Point...'
/sbin/iwconfig wlan0 essid moozie
echo 'Scanning For Specific Access Point...'
/sbin/iwlist wlan0 scan
#echo 'Setting Wireless LAN To Managed Mode...'
#/sbin/iwconfig wlan0 mode Managed
echo 'Setting WEP Encryption Key...'
/sbin/iwconfig wlan0 key restricted insertkeyhere
echo 'Setting Specific Wireless Network Access Point...'
/sbin/iwconfig wlan0 essid insertssidhere
echo 'Bring Up Wireless LAN Interface...'
#/sbin/ifconfig wlan0 up
/sbin/dhclient wlan0
#/sbin/dhcpcd wlan0
----------------------------------------------------
now open terminal and run this as root (su, password, /home/insertusername/start_wlan.bat)
this might work, although i really am stabbing in the dark. networking is not my area of expertise, nor linux either to be honest

i've assumed that your password is in the form of a WEP encryption key (e.g. 21:FJ78FP32)
this is something i found off a random website that i used to get my network working, although i used ndiswrapper aswell (which you don't need to use). run this as root everytime you turn the computer on. if it works then it can be temporary solution.