Thanks. I'm not really a web guy but my client is and they were saying exactly that. It had to be Flash before and it was very hard edged and graphic but they were working with a company called Wonderland
www.wonderlandmovies.de who reckoned they could do full Cinema 4d renders on request from the website front end. I'd pointed out that it would still need a trip through After Effects to do the real compositing part nicely and we could cut out the 3d rendering part entirely by using AE & Mocha. There is still quite a bit of 3d in there but it's pre-rendered stuff that doesn't need to be editable. I assumed that Wonderland were taking my AE files and somehow hooking them up to the website front end via some form of script (as they were going to with the Cinema 4d files).
I haven't been onto the website but somebody told me it doesn't look exactly like my files so I could be wrong there…