Medeksza please help

[Geminii]

It is a new problem with the Appointment book.
Regarding the dates and jumping to 2005, we were
able to change the English time format after installing
a non oem version of XP and it will now accept 2004.
But now it keeps adding "on 12:00" to every entry.
for eg

usr] "hal i have an appointment on tuesday at 4:00pm"
hal] "you have an appointment on tuesday on 12:00 at 4:00pm
     I will remind you when this time is near"

usr] "hal remind me to watch friends on friday at 9pm"
hal] "i will remind you to watch friends on friday on 12:00 at 9pm"
[?]

Could you please help as we went to a lot of trouble to get hal to accept 2004 dates, this new problem is a bit of hair ripper.
Thankyou