Since I'm skint I'm afraid I can only afford to round two corners per box. Well, that and I can use the excuse that "Actually, I wanted it to be that way"
I'm quite happy with it. It looks alright. It's still a nice fluid layout. I've had to lose the borders on boxes (no biggy) as I haven't figured out how to stop the square border on the round corner and it looks silly like that.
Next I need some drop shadows or perhaps rounded borders. I think this will be really tricky without extra markup though