Unfortunately, the powers that be at SolidWorks have chosen not to let the lowly users control the orientation of planes. It seems like this would be a relatively simple addition to the user interface, but it never seems to get enough user requests to get implemented.
Thanks for replying Jerry. I did think as much and coming from a Pro-Engineer background am finding it ever frustrating!! Oh well I will persevere to try and get something done, one day maybe!