Ok then... So I've followed advice and kitted up a new v6.05 board to look how I want it. The problem is it's empty at the moment.
I've found converting my database over to be a bit of a headache.
I can't import v5.10 stuff directly into v6.05 apparently... it can only accept stuff from a 'proper' version of ubb 5.x (not 5.10 -> 2000d)
So.. I got a 5.47 board, and from the sound of the instructions, I can just copy a few of the board files over my original v5.10 ones, and it'll be a brand new board!
I don't trust those instructions and my lack of knowledge... so I'm making a backup board. (10k files & 100mb to ftp around

)
I've read from old threads here that people upgraded from 5.46 -> 6.x, so I'm hoping once I have a complete backup database with 5.47 board files.... I can then import that into my 6.05 board... and then move that to it's old home.
So, that's kinda nasty for a noobie like me. So, does anyone have any tips, or decent instruction sets to help me out? I have the ubb 5.47 Users Manual, but that as I expected is very scarce of helpful info. :S