[Koha] How to devise data in CSV file to upload in off-line circulation?

Dear Friends, Our SOUL software circulation data avaliable in excel sheet, and details are devised in each columns as follows, patroncardnumber bookaccnumber issuedate duedate How can we prepare this excel sheet to upload in Koha offline circulation tool? Regards, -- Vimal Kumar V. Technical Assistant Mahatma Gandhi University Library Kottayam, Kerala- 686 560 Web: http://www.vimalkumar.info Blog: http://linuxhalwa.blogspot.com http://kohageek.blogspot.in --------------------------------------------------------------------------- "I forget what I was taught. I only remember what I have learnt" -Patrick White