Sorry - I don't quite understand what you mean with the word "exhibitions", but if it stands for general railway events in Switzerland then this is the place to look:

http://www.voev.ch/Expo___Borse.html

If you mean flea markets/swap meets, then look here:

http://www.stefanunholz.ch/kalender.html

A large "toy fair" such as Suisse Toy does not occur in February.

Thanks Unholz,
by exhihibitions I mean "toy fairs" with model railway layouts or permanent exhibitions and train museums and even live trains. I will more closely at your link later as I will need to translate it- your reply is very much appreciated to help plan my little train escape from down under.

Mike thanks for your input also. I would just love to go to the Nuerberg fair but I have other commitments during the time it is on but may be able to get back to Germany before going into Switzerland - I plan to ride travel the Glacier express.
I will check your link out later also - its now midnight in Australia and I thought I would just check if I had any feed back.

Thanks heaps

Diesel