Welcome irishstyle,
Before we go any further would you supply us with a bit more info. In your reply to this please tell us some basic details about your computer, such as the Operating System that you are using (95/98/ME/2000/XP/Vista etc), amount of memory, any firewalls installed, AV or anti malware applications; such information helps us to help you.
i have alot of programs and can get more but i dont know how to install them if my computer wont stay on long enough for me to install them on it. what should i do?
Is the machine running for a period of time then locking up which forces you to restart or is it rebooting itself? How long is it staying up for before it goes wrong? are you seeing a countdown timer that tells you that it will restart in 60 seconds (and which decreases)? Please describe the symptoms as fully as you can.
Are you still able to download from the web?