Access second directory tree

["Stephen P. Molnar" <smolnar jadeinc com>]

I currently have two RedHat distributions, on separate HD partitions, on my
platform; 4.1 and 4.2.  I use the 4.1 installation on a routine, daily
basis for research in computational chemistry and don't want to do anything
that will cause problems.

I am using the 4.2 installation, which is on a smaller partition than the
4.1 distribution, as a development platform to test new software and
upgrades.  I would like, however, to be able to access each Linux partition
form the other.  I have tried using fstool to mount the 4.2 tree while in
4.1 but it doesn't seem to work, more specifically the tool won't allow me
to completely define the file tree that I want to access with regard to
file type.  I haven't tried editing fstab manually for fear of mucking
something up.

My question, perhaps overly simplistic, is is it safe for me to do this,
and how do I accomplish it.

Thanks in advance.
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Stephen P. Molnar, Ph.D.		Life is a fuzzy set
Foundation for Chemistry		Stochastic and multivariant
614.486.4076