How to get a java plugin manually installed in Firefox, using ubuntu?

[Lee Gold]

Hi, using Uubuntu 11.04

I don't like Firefox 4 and 5 so I uninstalled it and installed FF 3.6.19
manually in the /opt directory. It works really well. I wanted to add a
java icedtea plugin to FF. But I can't use Synaptics (the package
installer). Synaptics does not see the FF 3.6.19 - it does not know it's
there (because I manually installed FF 3.6.19) and will try an install
FF5 if I use it (synaptic) to install the icetea plugin - makes sense it
would do that - it thinks no FF is installed

How do I get a java plugin installed considering how FF is implemented
on my system?

I have tried getting a .so icetea plugin and using a link from the .so
file to where I think it should be in the FF directory, but no luck.

Thanks,

Lee G.

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