Hello... I'd like to create a line chart similar to the one below... except on the lower line, it shouldn't drop to the x-axis if the value doesn't exist (currently being set to dbnull)... I just want it to plot the points it has.  Is there any way to do this?

Currently, I'm building a datatable with the columns being (Name, 4/1/2010, 4/2/2010, ...) and the rows being each line... so the datatable for the chart below consists of two rows and 13 columns (1st being Name and then 12 dates). 

Any ideas?  I want to be able to chart date-based collections where each name may not have the exact same date list. 

Thanks

Rocky (v8.3)