Skype on XP disable autostart

Follow the instructions in this link:
http://linansg.wordpress.com/2007/02/22/to-remove-autostart-programs-from-windows/

To remove autostart programs from windows

Windows XP comes with the System Configurationtool (Msconfig.exe), an excellent way to manage the startup process. To start it:

1. Click Start, click Run, type Msconfig, and then press Enter.
2. On the Startup tab, you’ll see a list of all the programs and processes that are set to run when Windows XP loads.
3. Speed up your overall start time by clearing the check box next to any item you think you don’t need.
4. Click Apply, and then restart your computer for the changes to take effect.