suppress unused column in crystal report

hi

my question is very simple.

I have vb form in which I use grid to allow user to enter break down like

QTY CASE BAND DIAL ......
100 PNP SUNRAYBLACK MOP
100 ROSE SUNRAYGOLD FAKE
...
...

AND SO ON..

user can add as many rows but maximum of 5 columns.I send it to database and use the data to print a crystal report.Now in my crystal report i have made 5 column using lines and data is printed.

The problem is when user add only 2 or 3 or 4 columns the rest of the columns in my report are displayed empty which doesn't look good in reporting.I want to suppress those empty columns.

Please suggest

Thanks