Well My friend, firstly my name is "Mandeep"
If you right click on chart and go to parameters , you will see option to set "BOX" Size what ever you want.
Simply choose the Box size you wish to use...and you are too much "zoomed out", try to zoom in for clear charts!
Set the Grid to " NO" and click on chart you will see the grid!.
Note" Grid is designed to showup on clicking on the chart at a point from where you wish to see the grid. If you double click again, it goes away!
This feature was picked up as a pre built code, so was not touched!
Play with those parameters!.....
You can refer appropriate boxsize as per this guidelines
http://stockcharts.com/help/doku.php?id=support:understanding_pnf_charts
Price Range Box Size
Under $0.25 .0625
.26 to 1.00 .125
1.01 to 5.00 .25
5.01 to 20.00 .50
20.01 to 100.00 1.00
100.01 to 200.00 2.00
200.01 to 500.00 4.00
500.01 to 1,000.00 5.00
1,000.01 to 25,000.00 50.00
25,000.01 and up 500.00