graph sizes causing clarity problems

Hello,

I'm trying to get cricket to draw my graphs larger then the 595wx255h
that seems to be the default. I've done:

graph --default--
        height-hint  = 342
        width-hint   = 800

This does make the graphs bigger but also makes the grid lines very
blurry and the text unreadable. The hint values where chosen because 342
is 42% of 800, which is the ratio of the default width and height. 

Does anyone know how make the graph images larger without losing
clarity?




Thanks,

Adam Fletcher
Director, Information Technology
PowerSteering Software, Inc.