ClarisWorks versions through 3.0 will not print borders for the top most or left most cells of a Spreadsheet document when both column and row headers are hidden (this has been reported to occur also with the right and bottom most boarders). This issue has been corrected in ClarisWorks 4.0. If you are unable to upgrade to 4.0, there are two other ways to get around this limitation:
1. Put data in the second row or columns only
2. Copy the data from your Spreadsheet document into a Spreadsheet frame.