If you're running Windows 7, or are ever planning to upgrade to Windows 7, don't bother buying this card. This card uses Creative's infamous flexijacks, which work fine when the software that is meant to switch the jack's functions works, but under Windows 7 that software no longer works and Creative shows absolutely no interest in telling anyone how to change the flexijack settings under Windows 7.
Even when getting in contact with Creative tech support (which isn't easy, as Creative flatly refuses to let you talk to them on the phone, often the best solution for trying to explain a problem) you'll be given the run around for a few days and then told that they aren't interested in dealing with a problem that they've created.
Seriously, if you want to buy a soundcard don't bother buying Creative, buy from another brand instead. Not only do they tend to be cheaper, companies like Trust have a much better level of tech support.