Realtek AC'97 audio driver

I recently reinstalled windows on a Dell Optiplex GX270. All of the hardware worked out find except for the sound card. It's a Realtek AC'97 card, and I cannot find a working driver for it. -A driver CD that may have come with the computer is not an option as the previous owner cannot find one. -The driver provided by the company (http://www.realtek.com.tw/downloads/downloadsView.aspx?Langid=1&PNid=14&PFid=23&Level=4&Conn=3&DownTypeID=3&GetDown=false) installs ok, but leads to a blue screen crash shortly thereafter. -The realtek drivers I could find on the Dell site lead to similar blue screen crashes. Does anyone indicate a driver that will work? ------------------ Some Computer specifications: Dell Optiples GX270 Windows XP professional (Service Pack 2) Intel Pentium 4, 2800 MHz