Hi Kaz,
Web based is a brilliant idea as we tried it with limited success several years ago. Latest technology is superb but if your computer cannot access the web due to lightening strike, your ISP broadband being down (as it regularly is), the server not playing or some other failure you are pretty much out of work. The other limitation, especially working in remote areas is actual maximum data speed. We found that even over a 56k dialup we had to keep the system pretty much free of "fancies" and keep the data to a bare minimum to make it really usable.
Will be glad to help and share the info we have with you either on the forum or via PM,
Southwest Medical Ltd