Thank you Buenchico and rojash for all those helpful suggestions. My student neighbour came in and read them and fixed it in 10 minutes - not sure whose instructions he used, as had other visitors at the time, so couldn't watch. But i am very grateful for such prompt help and support from you both and can now print out all the help for future reference! Cheers - Flic
Thanks for that VHG. You are right as he set the default as you said. I wonder if I shall ever feel a bit more confident to experiment a bit!! ( Before I go totally senile!!) :-)