Parental Control Password not needed

I've got a 6 year old kid. I'm not worried about her looking for
inappropriate material on the web - she's got a select group of sites that
she knows how to get to and use, like pbskids.org - but I thought it would be
good to turn on the Web Filter in the Parental Controls in the unlikely event
that she got off course.

I don't want a password on my administrator account. So every time I log on
to my account a message pops up to *remind* me that I don't have a password
and Vista thinks I should set one. I'm not worried about my 6 year old
changing the parental controls with in my administrator account - she doesn't
even know what they are.

I haven't found a way to stop the nagging for me to set a password. It
looks like I can choose between two annoyances: have to enter a password
every time I log onto my account, or have to be reminded to set a password
every time I log onto my account.

Is there a way to turn off the nagging? A registry setting or something?