Hi John,

Many thanks for your very comprehensive replies.

I haven't had chance to try them all out yet but the ones I have I can't get to work.

On my laptop ( a Sony Vaio ) the fn key does not appear to have any use as far as I can tell. I know that on some keyboards this does bring in the Numeric Pad using keys M<J<K<L<U>I>O etc. but it has no effect on this keyboard.

I am going to try to bring up the Spanish Language settings as an alternative and just toggle in and out as this seems to be about the best (only) solution I can see that might work.

I will let you know how I go on.

Many thanks as usual for your great help.

MikeL2