Schedule Task

Go to Start button > All Programs > Accessories > System Tools > Scheduled Tasks.
Double left clicking on Add Scheduled Task.

Click Next and select the program that you want to start when your system wakes up. Click Next.

In the following three screens, select the Daily option, the time that you want your system to wake up, and then type a username and password with Administrative privileges.

On the last page, select the Open Advanced Properties check box and click Finish.
When you see the Properties dialog box for the scheduled task, choose the Setting tab and select the Wake The Computer To Run This Task check box.
Click OK.

Now, you're computer will be ready and waiting for you each morning.

Note: This tip applies to both Windows XP Home and Professional editions.