How do I hide an xml column?

Hi,
I have an xml template that needs to be altered.  I must hide the column btnSystem, and I can not delete it.
<?xml version="1.0" encoding="UTF-8" standalone="yes" ?> <Object Type="Schema"> <Row> <Column ID="LineNumber" Type="label" Text="" load="1" Class="textbold" ></Column> <Column ID="Code" Type="textbox" Text="" Width="40" load="1" Class="text" ReadOnly="true"></Column> <Column ID="Description" Type="textbox" Text="" Width="130" load="1" class="text" ReadOnly="true" ></Column> <Column ID="btnUser" Type="button" Text="..." Title="User Procedure List" Class="lookupButton" src=& ...