Outlook CRM (an add-on) does that sort of thing by using companies as the
prime contact.  Outlook is focussed on each Contact being important.
Microsoft CRM is also worth having a look at for that type of behaviour.
There's also Prophet and many other CRM packages for Outlook.

 Judy Gleeson [MVP Outlook]
 Acorn Training and Consulting
 www.acorntraining.com.au

 Everyone - turn on your Advanced Toolbars and learn how to use the Field
Chooser and Group by Box!!

 > The situation: I have 5 contacts of people working for the same company.
Is
 > there a filter I can use or create for example: "Only list first contact
in
 > company"?
 > It can't be specific as this needs to be applied across my whole address
 > book which contains many people from same companies.