Hi gang, I have a few more questions. 1)Does anyone have a ER (relational) diagram of the database? 2)Has anyone experienced problems with double entries of items. Two or more copies of one book? How is this handled? 3)After one version of Koha has been installed, how easy or difficult is it to migrate to a newer version? (I ask this because I'm interested in the new upcoming feature dealing with LC Call Numbers). We have found a sloopy way around this problem by changing the biblioitem table=dewey to a varchar(20) and changing the cosmetics of the interfaces so as not to confuse users. Then instead of having the dewey number imported, replacing the number manually with the LC number. Seems to work so far. Thanks for any insite you can give. Marina :) Marina Salcedo FSU-Panama Librarian 314-0367 ext. 234 email: marinasalcedo@hotmail.com _________________________________________________________________ Join the worlds largest e-mail service with MSN Hotmail. http://www.hotmail.com