Problem with current and past in report (1 Viewer)

[mtp]

I want my report not showing the current new balance if it 0.00. But the problem is we keep track all the customers who haven't pay us since 30, 60, 90days and so on. When the report comes out, it showing that customer's in the current column is 0.00. If I display the report not showing <>0 on the current column then I will miss all the customers who still owned and haven't pay in full yet. Does anyone know how to deal with this? Please help! Thanks this MUCH!