you may find the freeware program 'Comparator' from SoftByteLabs.com useful,you can check the 'user defined' drop down box to refine the search. failing that; why not use a dissasembler and print the list to compare 'clones'.How can western companies compete with amoral creeps in the far east? -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist