I enclose the following AppleScript that serves to generate a unique PDF file (using Adobe Distiller) from one series of files (with names ending with .ps or .eps) contained in one folder. Use: drag and drop the folder on the droplet, et voliĆ !
[robg adds: Due to the length of the script, I pre-compiled it and placed it online for download: epstopdf.zip. I have not tested this one...]
Mac OS X Hints
http://hints.macworld.com/article.php?story=20040312035739209