Use of underscores

I am learning (very slowly) that using underscores (_) in column names can be a very bad thing.

This really comes to light when I try to graph the data from one of those pages... If the data requires an NCV_* entry in xymonserver.cfg, I never get any data in the server's rrd data folder.

Is there a quick way to get around that (I am apparently really fond of using underscores in names)?

-dan