[Pan-users] Autorefresh headers in subscribed groups

[pan]

I'm having trouble figuring out how to get pan to auto refresh it's headers.  
Is this a possible feature?  I have filters set up and rules set up to use 
those filters, but I'm still having to manually press <shift>+<ctrl>+u to get 
the headers to referesh to activate those rules.  My ISP's newsgroup servers 
don't cache for very long, so I have a limited opportunity to get the articles. 
 I keep missing them while I'm sleeping, at work, etc.  Any help would be 
appreciated.

Thanks,