first of all ,thank your for your reply.
I think i bought the copy.becanse there're many copys in my country.
half-life seems not have been on sale here yet,the news which i get from a hardware website.
i like the game so much.but i can't get it till the next month.pity!!!
thank you very much
another question.would a 5900zt be strong enough for the game.(5900zt is not 5900xt. zt which is only sold in China ,whose frequency is a little bit lower than xt's.)