That appears to no be available to change but TankGirl did find it in the registry.
So the question is now "Do you feel lucky?"
As I was looking through my e-mail settings, I noticed that I have my mail set up to check for new messages every 30 minutes. I just want to receive mail as it comes in. If I un-check that particular box will that enable this to happen? Also, if I have to set it to check every minute, will that effect how my system runs? As in, will it noticeably interrupt things?