benny, lots of people have transferred at firefighter level. its a good investment for the brigade that takes the already trained recruit. the questions should only be related to general 'stuff' so if youre reasonably on the ball they will take you, of course you will probably need to know about the brigade you want to transfer to etc, visiting before interview is always a good start, ask those you visit about current local topics and make sure youre on board with cfs and equality issues (which you should already be aware of anyway) its also good if you have extra qualifications or specialist skills.
it realy is a lot less daunting than doing it at higher levels, be yourself, be honest and do your homework on the 'lucky' brigade you choose!!
dave bev