Thanks Dave, I have tried to position the cursor at the desired place, but when writing back over those three locations, the data didn't change, although the new data was different. What command might you use for cursor position? Thanks --- Mark A Cherry http://www.piclist.com/member/MAC-CCC-Z75 PIC/PICList FAQ: http://www.piclist.com --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.564 / Virus Database: 356 - Release Date: 1/19/2004 -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu