Year to date rain rate help

Someone has been taking all the rain out of my rain collector
Reading -457

I have recently setup this weather station after having the sensors inside the house making sure it all works as it should.
after putting it up out side
I noticed a negative rain rate. I have not worked out how to reset that figure
at this stage my current history readings are not important, in fact
I would like to set all back to a zero starting point

any ideas what to delete or other

http://home.xtra.co.nz/hosts/zl2tsweather/

Much appreciated as always John

hi
under setup, control panel, barometer offsets and rainfall
there you can set the day, month, year, yesterday, rain totals
and dont forget to click on Yes to save settings once you have set each one

Hi,
Brian gave info on how to start over again afresh in this following topic

http://www.weather-watch.com/smf/index.php?topic=4750.0

cheers

actualy, i should put a check in that the year to date rain cant be less than zero!

that might have come about with the rain update from the dallas 1 wire counter?