ok i have an online game on the net for people of all ages to play what i want to achive is every 30 minutes i want the server to do what i write on a php folder etc... say i wanted 500 points to be added to my account every half hour how would i b able to do that with out being on the site clicking on a run script every half hour plz plz it would help me very much to recieve any infomation thanks scott milner