Need help graphing just some data points

I have three data points (call them A, B, and C) of which I would like to
make a graph with two lines.  The values are numerical, but I want to graph
percentages.  The line graphs would be the following values:
1. A/(A+B+C)
2. B/(A+B+C)

The problem is that the first two values are so small they barely show up,
so I really don't want to graph the C percentage [C/(A+B+C)] so that the
remaining two values can scale properly, but it's my understanding that it
still needs to be part of the template.  When I change the C variable to
Graph Item Type to Comment or GPRINT the graphs don't generate properly.
Any ideas how I can accomplish what I'm looking to do?

See http://www.mtcnet.net/~fbulk/graph.bmp and
http://www.mtcnet.net/~fbulk/graph_template.bmp to see the graph and
template settings.

Regards,

Frank

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