Thanks very much for taking the time to reply
Lady Fitz, I will download SAS as you suggested, I have read good things about it.
I also have an external HDD, I just forgot to mention it in my system specs
Re ZA, I agree that in the early days it was very buggy, it can still be a bit that way inclined but the customer support is excellent. Having run it for a number of years, with a fair amount of success, I will carry on with it, I should also mention that I renewed the licence last week lol!
Once again, many thanks for the advice.