[Google-Desktop] Reminder/Agenda plugin?

Hi,
I just started using Google Desktop and it works pretty fine! However,
for me it would be great if there would exist a function in which you
can add tasks and appointments of which the toolbar would send a
reminder. Did I miss it and does it already exist? Or could anyone make
this kind of plugin? I found the Calendar-plugin in which one can add
notes for each day but it doesn't have a 'reminder' option.

Thanks!
Maaike