RegExp - Replacing 'R&B' with 'R&&B'

Hi, For all you Unix gurus this should be run of the mill stuff but us Windows boys tend to get confused easily :) How can I easily match occurrences of text along the lines of R&B and replace it with R&&B ? The regular expression s/&/&&/g obviously replaces any occurrence of an ampersand with a double ampersand but I need to do a match so that it only replaces instances which have non whitespace on either side of it, ie \S&\S I think I'm along the right lines but haven't had enough experience with regular expressions yet to 'finish the job'. Hope you can help. Neil -- ---------------------------- Work: neil.freeman@asa.co.uk Home: neil@curvedvision.com Web: www.curvedvision.com ----------------------------