there is a very very simple method and if u want i can write a small app for you but i need two days, cause my lappy is not working..
for now i can assist you with a simple trick
then save file as "anyname.bat"
goto start>programs>Accessories>system tools>schedule tasks
there jus shedule a task and when it asks for program's exe give this bat file.. and specify the time.. for that task..
also u can turn ur computer on with that schedule task option at specific time, this is what i used few months back when my BW was only free at 2am