You'll need all 3 cd's. I had trouble with beta 1, but this one installed well and looks good. I still prefer Xandros Desktop v 1.0, but you know, Window Xp is still hard to beat--so many programs, so little time. But, it's good to be ready for who knows what!
I doubt you need all 5. Usually you don't need the 3rd disk, but on my install it asked for it.
When I found the link it said it was beta 3 and that the distro hadn't been upped to the usual mirror sites yet. I just looked at linux.org and see that it still shows beta 2.