Sorry about the delay getting back to you. You card is the SB Live 5.1 (Dell) version, which has a different DevID than the one in the that is in the INF from the daniel_k driver. If you haven't downloaded it already grab it from here,
and unpack it (it is self-extracting). Then go to the,
folder and open "wdma_emu.inf" in Notepad. Then add the following,
in the following locations,
Save the changes and then see if the driver will install. If you're uncomfortable making the changes yourself here is the INF with the changes already (need to remove the .txt from the end),
then copy and paste it in the WDM folder replacing the original.