If you always open the same program every time you start Windows XP (such as your email application), you can designate that program to open automatically every time Windows starts simply by using Microsoft’s Task Scheduler. First, open Task Scheduler by going to Start, Programs, Accessories, System Tools, Scheduled Tasks.
Then click the Add Scheduled Task icon. Click the Next button and select the application you want to open. Click Next and then choose When My Computer Starts. Click Next twice, then Finish, and your selected program will load every time you start Windows.