[Ti] Ti Airport Problems

[DBLearn]

Hello all, I have an old 1Ghz Ti Powerbook running 10.3.7 and have a  
home wireless network set-up. It has always had no problems joining  
the network then all of a sudden I get this message "there was an  
error joining the selected network". It sees the network fine just  
won't join. The 2 iBooks and my 17" PB are using the network just  
fine.  I have trashed prefs and reset the network to no avail. has  
anyone come across this problem? Thanks