install multiple java JRE versions

Greetings
having stepped thru the crazysquirrel's howto for installing Java RE 1.5.0.11 (latest ver avail at post - howto http://www.crazysquirrel.com/computing/debian/java.jspx) i now need to install a 2nd older version of the Java RE so i can navigate to the web interface for a Cisco 3750 switch (my IOS is very limited).

The Crazy Squirrel mentioned how to config your system to recognize multiple installed versions of JRE but when ever i attempt to use the HOWTO for installing the older version the following error pops up.

my current system so far
debian etch
kernel 2.6.18-4-686
KDE 3.5.5
java version 1.5.0_11

I have downloaded the binary's from sun for JRE 1.3.20 & 1.4.0 (both these versions are ok with the Cisco Web Interface)

error when executing the fareroot make-jpkg j2re-1_4_0-linux-i386.bin

Creating temporary directory: /tmp/make-jpkg.NftMv13295
Loading plugins: blackdown-j2re.sh blackdown-j2sdk.sh common.sh ibm-j2re.sh ibm-j2sdk.sh j2re.sh j2sdk-doc.sh j2sdk.sh j2se.sh sun-j2re.sh sun-j2sdk-doc.sh sun-j2sdk.sh

Detected Debian build architecture: i386
Detected Debian GNU type: i486-linux-gnu

No matching plugin was found.
Removing temporary directory: done

does anyone know what plugins are required to make the older java binary into a .deb package? Both 1.4.0 and 1.3.20.bin return the same errors. thanks in advance