http://www.isd.toshiba.com.au/71/live.dll/topic/content/driver_search_list.jsp?BV_SessionID=@@@@1018645136.1163931941@@@@&BV_EngineID=ccceaddjgflklmmcefecekfdffhdfgi.0&theAction=true&CATOID=-15058&MODE=NPRO&ProductMenu_0=Notebooks&ProductMenu_1=Satellite&ProductMenu_2=303542&x=11&y=7
and select :
WinXP Sound 5.10.00.5210 Realtek Sound Driver 4.87Mb A30SoundXP.exe
