Problem with Axis on line chart

Hello,

I have a line chart which that should have on the X Axis a date and time format dd:mm:yyyy h:mm
there should be something like 20-25 labels on the grid. however, when I put 'date Axis' for the X Axis it is giving me by default only one label because the date for all the label is the same and only the time is different. when I try to put Text Axis it showing me only 2 consequent labels for the entire grid with a big space between them.

I want all the grid label to appear on the grid.
the format of the X Axis label is something like this:

4/17/2014 14:10:08
4/17/2014 14:20:08
4/17/2014 14:30:08
4/17/2014 14:40:08
4/17/2014 14:50:08

Thanks
Shimi

Thanks Andy,
I am going to use the XY Scatter.
this resolve my problem

Shimi