Thanx Herbert

It allwent into Excel OK and the arrays defined as planned. But the
letter values that reulted were not unique for each letter.

I've sort of got solver workin, but the values won't come out asd an
integer no matter what I do. Which alo=so means I don't get a unique
integer value.

I have heard there is a bug in some versions of Excel and solver. Are
you aware which ones it may be. I can only find reference to the German
& Polish solvers giving ineger problems

Regards
John