Welcome to the board, degaffa. Do you really want to know what happened to Jim Brass and spoil the surprise or wait till you watch what happens? I will put this in spoiler code in case you change your mind.
He survives and goes back to work after a hospital stay.
For future questions about CSI (original Las Vegas team) past episodes, there is a thread here called Episode/Character Questions. That is NOT for questions about upcoming episodes; there is a seperate thread for those because spoilers sometimes ruin things for some viewers. Hope this helps.