>One of our clients wishes to access our Westwind app via handheld mobile devices. Has anyone experience of this and the problems to be dealt with?
Well the obvious point is that the web pages need to be small and simple due to to screen size available with a mobile device.
Something like this is a good starting point for advice :
http://www-128.ibm.com/developerworks/wireless/library/wi-web/
Cheers,
Jamie