Controlling Crystal Reports 9.0 Grids with VB

Hello,
I'm new to Crystal reports and am finishing up my first vb app. I need to be able to control the "Draw Custom Line" property of the Crystal Reports grid within VB 6.0. Does anyone know the Grid property I use in VB to control this?
Thanks so much!
Tricia =)aha! After a full day of searching for the answer, I think I found a comparable solution to this problem. =)

Solution: Split Dual Axis Grid
- Bottom axis range from x to alert level
- Upper axis range from alert level to x

Pros:
- The alert level line can be placed on the grid and it can be a variable amount calculated in VB so that we can normalize the data appropriately.

Cons:
- the grid must have 2 data points in order to have the split axis option available. The problem with this is that we need to show the marker for each point in the event of a first time sampling and only one level to show on the grid. I am using the alert level for the second data point and so the markers are showing only the alert level line, but it still looks a bit funky, but at least I have the line!!!