OWA11 - Update Access 2003 Line Graph Report

I am using OWA11 for line charting and I am having difficulty with the lines bleeding due to null data. ? I need to set the null data to 0, if I don't it pulls back the line which then causes the data to not line up with the categories. ? I found a solution on the internet but it does not appliy to how I am building the report in Access 2003. ? The solution was to make the data point transparent but I am making the lines after the fact. ? if you have a solution please Bid.