Do you guys have any computer speakers that you like?
I went through a similar process about 3 years ago, where I tried a few of the packaged pc speakers, including an Inland, an Altec model, and a Monsoon flat panel system, (all were 2.1 systems).
I found that for music, In the long run I did not like any of them.
After trial and error, I have now found a pc system I really enjoy. It consists of a sonic t-amp, and a pair of Texton speakers.
My advice would be to start out with an inexpensive t-amp, and then pick out a pair of small used bookshelves that you like. If you ever tire of them, you could just sell them, and start over with a different pair.
I've run the t-amp and my computer with everything from JBL Aqaurius, to Vintage Ar-4's, to very cheap plastic cased RadioShaq Speakers.
By starting with the t-amp, It would allow you to replace components one at a time, as your budget and needs increase.
There is all sorts of future upgrades you can do with a computer based audio system, including USB dacs, Streaming of music, ext... When done right, I believe a computer based system could sound really good.
Edit: One more thing, Out of the pre-packaged systems I tried. I liked the Monsoon system the most. It had a cool factor to it. I remember it sounded really good with some music, but seemed to lack with others. What it did do well, it did very well.