You definitely want to get a better sound card. However, since money is a limiting factor in many cases (including mine), you can maximize your Audigy usage by getting the kX driver. Check here:
http://www.tweakers.net/meuktracker/4534
It's got a bit of a silly, self-important user interface, but it's made my Audigy usable. ASIO support and all that.
That said, getcherself a real interface. And check it out first if you're planning to get an M-Audio. They can't write drivers for sh?t.
Also, think twice before buying a Behringer. The boards themselves are decent (designs lifted from Mackie), but in my experience, the power supplies are often quite shoddy, and are generally the first component to fail in any Behringer board. I'm in the US, so perhaps things are different in the European market. Just letting you know, though.
-Hoax