i think the first game i played on a PC was Championship Manager 95.
The computer I think was 66mhz(with the turbo button :? ) 8mb ram and 200mb HDD. Running win95a. Still got it in the garage. It used to take an hour to setup a game with 3 of my mates, i can remember we used to go out for a game of footy or cricket while we waited for it to load.
good old days!
after that is was probably C&C Red Alert, that was on a P90 and it blew me away, still play it to this day.