How to run scheduled tasks in windows XP.?

I just got a new windows XP machine and I want to run programs like disk defrag and disk cleanup and updates for my antivirus at sertain times so I don't have to worry about it please help!

How to run scheduled tasks in windows XP.?norton 360

Using Scheduled Tasks

To open Scheduled Tasks, click Start, click All Programs, point to Accessories, point to System Tools, and then click Scheduled Tasks.

To schedule a new task: 1. Double-click Add Scheduled Task to start the Scheduled Task Wizard, and then click Next in the first dialog box.

2. The next dialog box displays a list of programs that are installed on your computer, either as part of the Windows XP operating system, or as a result of software installation.

Use one of the following procedures:鈥?If the program that you want to run is listed, click the program, and then click Next.

鈥?If you want to run a program, script, or document that is not listed, click Browse, click the folder and file that you want to schedule, and then click Open.

3. Type a name for the task, and then choose one of the following options:鈥?Daily

鈥?Weekly

鈥?Monthly

鈥?One time only

鈥?When my computer starts (before a user logs on)

鈥?When I log on (only after the current user logs on)

4. Click Next, specify the information about the day and time to run the task, and then click Next.