I see where you posted to a Bootchamp thread in the Mac Rumors forum. The Dev himself has been trying to work with folks who have been experiencing problems with it. Apparently there a few bugs to be worked out.

In the meantime, use QuickBoot as suggested by Van. Or, if you have the time and patience to set it up, install rEFit. It can be a challenge to get working the way you want but once it's setup correctly, it's an elegant boot manager.