Does your Control Panel have an AutoPlay option? I'm not on my XP system so I can't check at the moment.
If it does, use that to change the AutoPlay settings.
You may have to insert the SD card before accessing those options.
Into my computer a window usually shows up asking me which action I would like my computer to take. I checked the little box at the bottom where it says "do this action every time". Now I can't get this window of choices back. Can someone tell me how to get this window again.