Removing gridpaper lines on scans with live trace?

Hi everyone
In my continuing struggle to get the 'perfect' scanned images vectorized I would like to solicit the advice of the forum again
i wish to remove/ignore in live trace the grid lines that are printed on certain notepad paper, but whilst retaining the inked/drawn images I have added myself.
Is there a plugin, recommended exterior app, or Illustrator process that can quickly do this?
Often these grid lines intersect the scanned image, which is the problem.
I use CS4..
Thank you!

I would use white-out (the white paint used to correct typing errors back in the typewriter days).
However, make sure you apply it to the grid lines on the graph paper and not the image on your monitor. Some white-out paints are oil-based and will wreak havoc on the protective surface coating found on most LCD monitors.
OK... seriously... I would clean up the scan in Photoshop before bringing it into Illustrator. (Select | Color Range will make quick work of it... unless you were boneheaded enough to sketch in the same color as the grid lines.)

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