Unable to upload files to D2L Dropbox -iBooks > OSX 10.4

I have an Instrcutor who uses D2L (version 10.2 SP8 ) as well as Mac iBooks operating Tiger OSX 10.4.11. There are issues withuploading files to the Dropbox.

Mac Book > intel code duo 10.6 Snow Leopard

Firefox (newest) is supported web browser. "Your browser does not support dropping files from your device"

Safari 5.1 is a supported browser but users receive an error "your browser doesn't support uploading a file "

Google Chrome cannot be installed.

Is there any suggestions that I can provide this Instructor as he likes to work with the ibooks because it has - iMovie HD (06) which has better effects then the (08).

Currently the workaround would be to to put files on memory sticks and going to other school computers to upload.

Any feedback would be appreciated.