RMagick woes

i'm having major problems with rmagic, when cropping. on my local
machine it works fine. on dreamhost it kills my app.
the specific error is:
can't convert Magick::GravityType into Integer

a lot of googling reveals that it may be due to an older version of
rmagick installed on dreamhost.
i try to install the gem and it fails with:
configure: error: Can't install RMagick. Can't find Magick-config or
GraphicsMagick-config program.
RMagick configuration failed with status 1.

any ideas how to get around this?
triedto install rmagick from source also died with me, saying it
couldn't find GraphicsMagick. but if i test GraphicsMagick from
command line, it is found and works fine.

any ideas appreciated? anyone manage to get rmagick gem installed on
dreamhost?

yea. been through this many times. no luck.
always dies at:
gem install -i ~/gems rmagick

with:
No package 'ImageMagick' found
no
configure: error: Can't install RMagick. Can't find libMagick or one
of the dependent libraries.
                  Check the config.log file for more detailed
information.
RMagick configuration failed with status 1.