Modifying UML Class Shape

["Leitch, David" <David Leitch analog com>]

Hi,

I would like to have a shape which has associated attributes and also a fixed number of connection points.
Can this be done by creating a new shape or perhaps modifing the UML Class Shape to do three things.

1) Change the number of available connection points.
2) Label these connection points with text.
3) Be able to determine which points are connected in the diagram.

Thanks.