[plt-scheme] Newbie help please

Hi everyone,
to preface, I have been a windows user / developer for a long time and
this is one of my initial attempts to become familiar with developing
on linux command line
[I am trying to get ARC to properly run on my RHEL system]

I have downloaded MzScheme v 352 as well as Arc0
http://arclanguage.org/install

I have downloaded the appropriate tar files and am able to extract
them ok - I am having trouble with the following:

#2 Put MzScheme's bin directory on the path
#3 From the arc0 directory, run the command mzscheme -m -f as.scm, as
recommended
--

I believe my problems are with #2...

My directory structure is as follows:
|_mzscheme
  |_arc0
     |_as.scm
  |_mz
    |_BIN (directory)
       |_mzscheme


Any help would be kindly appreciated -- Thanks