as an example: Nokia Sports 5500 - Contacts application.

As with any S60 phone we can create groups of contacts. On 5500 I can only change the label for a group (I didnot check any other S60 phones for other functionality).

CContactGroup is (indirectly) derived from CContactItem. A CContactItem can have multiple fields.

If I create an application which adds an additional field to the groups in the contacts DB, will this additional field also become visible in the contact application? That is: for my application I need an specific attribute (code) for each group of contacts. Can I just write an application which adds the field to existing groups and to the groups template? And will this allow the user to enter this additional attribute with the group using the existing Contacts application or do I have to provide my own data entry application in that case?

Best regards,