The instructions leave out some important points for Ubuntu 7.10

If you get this -  FATAL ERROR:

"The uudecode program could not be found on your system..."

Then run this in the terminal - sudo apt-get install sharutils 

I also got this:

"Perl/Tk is not installed on your system or you have a version
(0) other than what is called for, so for the installation
to proceed, it will have to be downloaded from the CPAN site on
the Internet.  This means your system must be connected to a
network with Internet access and properly configured.  If you
can surf the web then you should be okay.

Once Perl/Tk is downloaded (approx 5.8M), it will automatically
be compiled and installed."

I checked perl --version and got -

This is perl, v5.8.8 built for i486-linux-gnu-thread-multi

Copyright 1987-2006, Larry Wall

So, I'm not sure which version of Perl this is looking for, but I'm not continuing with the installation until I get it sorted out. If it's looking for an older version of Perl, then maybe the package needs updating...