Eliminating all lowercase words

Hi folks! I need a function that will examine input for lowercase words. In the processing of that input, I would like to eliminate them (so as to keep all uppercase words). I prototyped a reasonable function using the 'Find: using regex feature' in KWrite, so it works there. $search "(([^\bA-Z][a-z]\b*?)*?)); $replace = ""; $add = preg_replace($search, $replace, $add); hWhen I tried it, it eliminated all lowercase words, and in the case of the single upper case word, 'Bellingham', it retained only the capital 'B' -- arrgh! Is there access to the internals of ucase function so I can find out how to do this, or is there any easier way? Any ideas, suggestions, and even admonitions would be very welcome! Tia, Andre