the 250 to 333mhz is your cpu Frequency. what are all the specs of this computer. So old like a p3 can run Xp as i havea a friend on here his computer is a p3 333mhz 512 ram it runs XP with no problem. AS far as the broadband internet that should not effect a computer at all. IF its a p3 or higher. But post your spec we can help you more.