Raise a event automatically

Question

Hi all,

i am developing a windows applicaton in which i need to raise a event automatically at a certain time.i.e. i need to make a entry to the database(MSSQL 2005) at a particular time(system time). i was able to achieve this  using a timer control where the timer control will be run on every second interval.But i don't think it's  a good method since it will be using the resources everytime. i want to raise the event only at a particular time. i don't prefer Shedule Task. is there any other method by which i can achieve this.Any help will be appreciated.