The SB0570 is the Audigy SE. For this card you need these drivers. When installing try to avoid installing all of the applications, control panels and other rubbish. Just install the driver. Remove your old driver first (and any other creative control panels or software), shut down, remove the card and boot up. Then install the new driver, shutdown, reinstall the card and start up again. If this doesn't resolve your problem then I would advise you to get rid of the internal modem and invest in an external V.92 56K serial modem, a real modem (I'm assuming that Cable/DSL is not possible for you), such as the one at the very bottom of this page.
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