Generate Report

I thank those who promptly responded to my first inquiry on the list. This second request is, I assume, a tad more challanging. I need a "Generate Report" function that'll allow the user to select one or more "groups" and what columns he would like to view. For instance, <fieldset><legend>Generate Report</legend> <form action="generate_report.php" method="post"> <CENTER> <TABLE BORDER="1" cellpadding="5" cellspacing="5"> <TR> <TD rowspan="2" valign="bottom"><strong>Select Group(s)</strong></TD> <TD colspan="2"><strong>Select Columns</strong></TD> </TR> <TR> <TD><strong>Category One</strong></TD> <TD><strong>Category Two</strong></TD> </TR> <TR> <TD align="left" valign="top">

       <input name="sel_group[]" type="checkbox" value="1">Group A<BR>
       <input name="sel_group[]" type="checkbox" value="2">Group B<BR>
       <input name="sel_group[]" type="checkbox" value="3">Group C<BR>
       <input name="sel_group[]" type="checkbox" value="4">Group D<BR>

</TD> <TD align="left">

       <input name="sel_cols[]" type="checkbox" value="Column A">Column A<BR>
       <input name="sel_cols[]" type="checkbox" value="Column B">Column B<BR>
       <input name="sel_cols[]" type="checkbox" value="Column C">Column C<BR>
       <input name="sel_cols[]" type="checkbox" value="Column D">Column D<BR>
       <input name="sel_cols[]" type="checkbox" value="Column E">Column E<BR>
       <input name="sel_cols[]" type="checkbox" value="Column F">Column F<BR>

</TD> <TD align="left">

       <input name="sel_cols[]" type="checkbox" value="Column G">Column G<BR>
       <input name="sel_cols[]" type="checkbox" value="Column H">Column H<BR>
       <input name="sel_cols[]" type="checkbox" value="Column I">Column I<BR>
       <input name="sel_cols[]" type="checkbox" value="Column J">Column J<BR>
       <input name="sel_cols[]" type="checkbox" value="Column K">Column K<BR>
       <input name="sel_cols[]" type="checkbox" value="Column L">Column L<BR>

</TD> </TR> </TABLE> </CENTER> <input name="submit" type="button" value="Generate"> </form> </fieldset> Let's say the user wants to view Group A and Group B AND view content from the Coulmn A, Column B, Column D, and Column K. So a checkmark would be placed within each box and the "Generate Report" button would be "hit" to generate a report with titles situated horizontally. I'm assuming I'll need to create an array for both "sel_group" and "sel_cols" and then, I believe it's "implode" them into string values??? Am I thinking correctly??? I know this query won't work...but this is the direction I'm headed... $query = "SELECT $sel_cols FROM tasks WHERE groups_id=$sel_groups"; IOW, the columns from the sel_cols array would go there, and the group or groups would go after the WHERE statement. Then I guess I would have to figure out the code for the echo. Am I at least in the ballpark??? Thank you and good night. Jeff