Thanks for all the info, guys!
Sorry I haven't been back to reply in a while... I saw it disappear off the main stage and thought it was gone forever.
Anyway, I have updates!
My boss gave me a HSU Research True Subwoofer VTF-2. Now I have a subwoofer!
Also, I'm going to purchase an HK 3390 off ebay pretty soon (I saw lots of great reviews and they're relatively inexpensive refurbished).
Basically, I'm just left with speakers around $300. I'm having difficulty picking those... so many people have so many different opinions! However, I do think I'm going to stay at 2.1... I think if I set it up right, it'll work for me. I don't want 5 speakers around my bedroom, especially since it's such a small room and my bed's in the corner.