Fellow Monks,
the path to enlightenment is hard and one has to walk it all by himself *sigh*

Anyway thanks to the mailinglist at http://mail.gnome.org/archives/gtk-perl-list/ and -once again- the sources of CSCMail I found a solution to my question:

Gtk->timeout_add($delay_in_ms,\&what_ever_sub_you_need);
main Gtk;
[download]

I hope anyone will come across this node and will find this solution helpfull...

Thanks for thinking.

Regards

Stefan K