check box in ALV - how to remove line selectors?

Hai All,

I have to display sales orders in ALV grid.

A check box shoud be displayed against each row.

So if the user selects few sales orders & click on SAVE the data will be saved in custom table.

The problem now is,

I used the statement

field_cat-EDIT = 'X'

to make the checkbox editable.

But with this statement, the ALV grid is displaying

row selectors also.

is there any way to remove the line selectors?I need only check boxes to select a row.it should not contain line selectors.

Thanks & Regards,

Bhaskar.