Startable with Schedulable

I have a model that is Schedulable.  And I get it all kicked off when I make a
request to it from a browser.  In its execute mdethod I do a: 

Model scheduler = (Model) request
                    .getService(Model.ROLE, "quartzjobschedulemodel");

But I want to change this so that it kicks off automatically when the container
is started.  I know that I can have me model implement Startable and that I can
specify in the meta-data activation="startup".  

But in my "start()" method, how do I get a handle to the quartzjobschedulemodel,
since there is not instance of a ModelRequest to getServices from?

Thank you, 
Nate