Turn off message notifications in default program.
Download Handcent from Market
Open Handcent | Menu | Settings | Notification Settings | Notification Settings(sub option) |
Make sure Enable Reminders is checked
Number of Reminders ( set from 1-10 or Keep Repeating)
Set Reminder interval(believe its in minutes(1,2,5,10,15)
I also find it nice to use the LED, this can be set to a custom On for x off for X milliseconds
Hope this helps