i getting a little upset

[harlowheat]

someone please help me
i bought the game yesterdayloaded the game fine went to play and the only thing i seen was the units and resources
then i came to civfanatics and someone said to play a little while and it begins to clears it self.
it did and the more times i played different single games it came clearer and more faster .
i had to go to work and just now came to play and now the loading screen and all of a sudden nothing, i can hear it but cant see it just my desktop
i have a AMD Athlon 3000+ processor
160 gig's
NVIDIA Geforce 4 MX
512 ddr sdram
preety awesome computer in my standards and i really want to play this game
someone please help