OK, got it all over, and all seems to be there, except it hasn't brought over anything after midnight last night, so I guess it must be something to do with data updates or something. I've taken my IF board offline so no more posts can be added, and I'll bring the posts over again tomorrow so it should be complete then.
My only issue remaining now, is that some topics seem to have the first few posts set out in a narrow table, then it switches to a table that takes the whole widfth of the screen. Also, some of them have very small text, whilst others are normal size. Any idea why this might be? For example: http://www.straightandleveldownunder.ne ... php?t=1254
Will it fix itself when I convert from phpBB2 to phpBB3? (That's my next step!)