This weekend I set up the Sound Blaster Audigy 2 external sound card and the Inspire T5400 speakers that I got for my partner for Christmas.  Wow, what a difference from her old setup!  Except for having to crawl around under the desk, it was all simple to set up, and now our home office has great sound.  I got the external sound card so that when we replace that computer, we won't have to mess with switching internal sound cards around.  The speakers are all small, but with incredible fidelity.  This is a purchase that I'm very very happy with!