Dragan,
Then simply localize the string of lower case letters to a #define or a lookup if the app really needs to deal with multiple languages.
chrtran() is going to be an order of magnitude faster (probably 2 orders faster than the RegExp solution) than the other solutions that involve several lines of VFP code along with several function calls.
>Exactly what I wanted to write - and I like this better, because it's language independent. Any solution where we list "abcd..xyz" will break in any other language except English and Latin.