How to flash messages for ITS users (URGENT)

Hi All ,

we are working on mySAP SRM version 4.00. it has integrated ITS 6.40 in it. Now as an administrator i would like to flash some messages to all ITS users who ever logs in to the sytem .

can any one please tell me how this functionality can be implemented in ITS 6.40 .

Any documents or links relating to this would be highly appreciated .

Thanks and Regards

Iftekhar Alam