|"here are the specs for my PC"|
You didn't list the CPU, motherboard or power supply specs?
Looks like your system just barely meets the minimum requirements for FIFA 08. If you want to play games & play them well, you should upgrade to at least 2GB RAM & install an actual gaming video card. Your current setup has crappy Intel integrated graphics not enough RAM. It's not a gamer.
The restarting can be caused by overheating, an overloaded power supply, or driver problem. It's impossible to tell based on what little you told us. Turn off XP's "automatic restart" feature, then the system will lockup & display a blue screen error message instead.