Hi
Neither of those Workshop Manual versions cover the 2.8TD or 2.8TDi ? In the eLearn version only the 2.8 JTD version is covered as well as the 2.2 & 2.3 JTD engines (in the DTE ver also the 2litre petrol & also JTD versions of the 1997 & 2300 engines) so they are all CRD engines.
The 2002-2006 eLearn format is the easier to use, the 94-02 DTE version is misnamed as 94-02? as it covers the early JTD engines (99-02???) as previously mentioned only it uses an older format which seems to only like the older browsers although I have run it on IE 8 without any problems. If you want just the workshop manual for the 2.8TD engine side of it you might be better to look for an Iveco workshop manual as they used a basically similar version in the Daily.
As for just mounting the image I don't think that works as you have to extract the ISO from the RAR & burn the ISO image to a CD & then install it onto your system from the CD & also it needs the CD in the drive while using the program after the initial install.
Cheers