[AccessD] Access 2003 Graph

Hey All
I have been playing with creating line graphs. I have run into a problem.
If I have
Date      Value
Oct 1      2
Oct 2      3
Oct 3     
Oct 4
Oct 5      8  
Oct 6      6
Oct 7      1
I get a line between Oct 1 & 2, blank between Oct 2 & 5 and a line 
between Oct 5 & 7.
Is there a switch I need to throw to get a continuous line?