Recently purchased the former, run OSX.2.6, and am just beginning to work with the latter. Also, my Terminal knowledge could be charitably described as "minimal". ;) Ramona «?»¥«?»§«?»¥«?»§«?»¥«?»§«?»¥«?»§«?»¥«?»§«?»¥«?»§«?»¥«?»§«?»¥«?» Ramona Winkelbauer, (703) 292-7390 (rwinkelb at nsf.gov)