Integrate rrd files into hobbit

Hi all,

I was reading some posts about integrating external custom scripts
into hobbit and was wondering is it possible to link existing rrd
database files created by some other application and use hobbit for
charting? If possible, what files do I need to eddit to make this
work? The rrd file is created using rrdtool so another question would
be about compatibility of the rrd file with the way the rrd files are
being created in hobbit.

Thanks in advance for any help.

Igor