Well, I was thinking about this - I did a site here - http://www.tulsatechfest.com last year - it was for a technical tradeshow - and it had already been started and I sort of changed it around a bit using the http://www.ventrian.com articles module which is simply an amazing module when you get to understand how to manipulate it around the pages.

I've got it action here as well - http://www.foodweek.com.au but we also did some tricks to the skins and containers to make it look and behave as we wanted. 

The key to doing something like this is to plan out what modules to use, and how to create fast to replicate pages, which allow you keep uniformity, not have too many modules to manage.

There is also the range of modules from http://www.dotnetjedi.com which I've used and skinned to make into cool looking solutions - so what you need to do is look for a moduel that allows manipulation and some form of templating infrastructure to allow you to get the look and feel you are after.

Does DNN have all the solutions, maybe not but knowing what modules are around and how to manipulate them will take you alot further.

Check those two out at least and see if it's what you're after.

Nina Meiers
My Site  -  My Blogs  - Goodies - 28 Free DNNSkins - Nina's Free Skins 

Thanks a lot.  Knowing what other modules are around can save you a lot of work and headaches.
But none module, so far as i know, has the functionality we need. Surely, however, the ventrian module leeds in the right direction, with the "myArticles" option. Combined with the Modules from Jedi we could be there. Maybe I'll give it a try and see if i can adapt it to my needs.
We need to 
- show only the articles for one company (but also some more structured info like contact info and dates. And there could be up to 1000 Exhibitors)
- give edit rights to these articles exclusively to the company itself (and the admin)