Once again thanks for all the good advice..............
I will let you know which method I used and how it went. For the record, I didn't mean to have a go at FOBOTCSO......some of his previous advice has been very helpful and useful. However, you've got to admit it was a pretty patronising post to say the least. Especially having just got back from the flying club after suitable refreshments.
No hard feelings I hope FOBOTCSO..........
Regards to all of you
FBW