Ibook G3 Airport card compatiblity problems

I recently purchased a G3 ibook from USA. I am in the Uk and have managed to connect to wi-fi internet at home, but when I go to the studio I cannot connect. The network does show up, then I enter the password and it keeps saying "password is incorrect". But it isn't - so is there a problem with the compatibility of my Airport card and is there anything I can do?
Below is the spec of my laptop.
Any help will be enormously appreciated - I am not very techy so I'm not familiar with a lot of the terms, just to warn you!!!
Thanks!!

Apple ibook Clamshell G3/366 MHz Laptop
Grey (Graphite) colored
Apple G3 366MHz CPU
128 MB Base RAM
6.0 GB Hard Drive
12.1" TFT LCD Display (No dead pixels)
10/100 Ethernet
56K v.90 Modem
1 USB Ports
Airport Wireless Installed
Currently has Mac OS X "Panther" 10.3.9 installed and running

NewMacbookPlz said:

You'll need to tell us what kinda of encryption your WiFi network is using.

If it's WEP type, you'll have to enter a $ before the password to get it to work. If it's WPA/WPA2, the old AirPort cards may not support that standard without a software update.

Click to expand...

the $ doesn't work, can you suggest anything else?
Many thanks for your help,

L_N