Web site downloaded driver from. www.realtek.com.tw/downloads/downloads1-3.aspx?. Ran a1_10 exe. That pulled up a winzip self-extractor dialogue box.
I unzipped into a folder I made als4000 and ran setup from that folder. The driver was found and it worked. The orginal driver that came with my 98SE operating system did not work in XP. This program solved the problem in XP.