disk quota warning via pop-up windows

Hi
Can anyone help to get disk quota warning messages through

pop-up windows to users PC?
I am having win2k server based network. I assigned a disk

space to 15 users and set a quota warning level to 75

percent. Now i want user itself get quota-warning if they

cross this limit via pop-up message on their desktop. How can i implement such features.
Thanks in advance
ssp2000