While I see you are YELLING for help the issue is simply you can set the DVD to do what you want as there is no standard.
Look up TWEAKUI on google.com and examine the options as to what XP can do when the DVD is put in. You never revealed what it should do so we'll have to give you the tools to change it.
Also AUTOFIX from Microsoft can help. Here's the link:
Good luck and hope you set it up the way you want it.
BEFORE I HAD A VIRUS WHEN YOU PLACED A DVD IN THE DVD TRAY IT AUTOMATICALLY LOADED. THE VIRUS HAS SINCE BEEN FIXED BUT NOW I HAVE TO KEEP HITTING AUTOPLAY TO GET THE DVD TO RESPOND. I HAVE DONE ALL INSTRUCTIONS FROM VARIOUS PEOPLE ON THE INTERNET AND ALL THE AREAS THAT WERE IN QUESTION WERE THERE AND PROPERLY LOADED. SO FAR NOTHING HAS WORKED. WOULD APPRECIATE YOUR HELP