No, really, it's not hard at all. It's not even that time consuming either, once you get the hang of it. I just finished 1/3 of the bottom half tonight, in about 2 hours or so. For all you guys who are hesitant, TRY IT! Trust me, it looks a lot harder than it actually is.
Woody, the one I did was in a book called Bargello Quilts, by Marge Edie, and the pattern is called 'Fireflies'. The ones in the book aren't really nice colours... well, they're not in my pallette, anyway, but the instructions show you how they're all put together, and even how to design your own. I didn't actually READ the instructions, but if I can get it just by looking at the pictures, trust me, anyone can figure it out. :D