All, thanks loads for the replies and suggestions - appreciated.
The ACO site has a mind of its' own I'm sure. If following the normal links/navigation from the home page it comes up as tickets sold out. If picking up from nav links on the l/h side you get through to tickets available..!!
Thanks kpy - you're a stress saver! Now I'm all good to go and rock and roll..
btw - anyone else going to the Airtrack Friday party/band night? - see you there