Using For Loop Step Keyword On Zero Based Arrays

Attached is a visual representation of My Array that was used in my VB6 program the dimensions are:

CODE:

I am using an ACCESS DataBase to populate the array.

Using the For Next Loop I can access any position within the array such as a individual cell or group of cells. Also using the Step Keyword of the For next loop I can select a group of cells to manipulate based on the Step factor. This worked well for me in VB 6. I am now migrating to vb 2010 and cannot fine documentation as to how this would be done on zero based arrays in Vb 2010.

In VB 2010 I see no reference to the Step Keyword nor examples of how it would be used with zero based Arrays.

A example of my use of the step keyword is:

CODE:

Any of the above loop setups works for me using VB6 Any Documentation or code would be use in my vb6 to vb2010 migration?