Help, crashes from ATC

FS2004 keeps crashing when I switch the ATC window on and off. It happens on all planes, though the number of ATC toggles varies considerably (4 for Bill Gs ERJ145 panel and 15 or more for MS planes).My set up is as follows:- P4 2.4GHz- NVIDIA GeForce Ti4400 128Mb- Windows 2000 Pro- FS2004I have been using FS2004 since it came out here in August last year with no problems. The only thing I can associate with the change is installing the new NVIDIA driver (53.03) around a month ago, though I cannot definitely say whether FS worked properly immediately after the installation.Does anyone know of any problems with the new NVIDIA driver? If so, could you recommend an earlier version for me to use?Could this be associated with the CTD problems mentioned elsewhere?Many thanks for any help.Ben