Can't open attacment

Hi!I’m using Notes Client 8.5 on OpenSUSE11.1 KDE4.2

I really would like to open attacment directly, but there is no way to set default application.

The only way i can do now is to save attacment and then open it.

I was searching in Help and there is something called “Attachment Viewer” that must be installed. How can i install this? Or is it possible to tell Notes Client what application the different file-types should open in?