mySQL and language encoding

I am using mySQL 4.1.21-standard, phpMyAdmin version 2.10.1. I am
storing Japanese data.

I have one table that has data stored in EUC-JP encoding which is
using Latin1_swedish_ci as the collation (it also includes rows with
English data). The data in this table was populated via an HTML
interface (the pages all specify EUC-JP as the encoding the browser
should use). The data in this table is scrambled when I view the data
in phpMyAdmin (regardless of testing different browser encoding
settings). I also cannot export the data from phpMyAdmin into any
usable form. Despite not playing well with phpMyAdmin, it looks fine
in a broswer with pages produced from a PHP web application (that
doesn't do anything special in terms of encoding).

I have another table that I am trying to populate with CSV data with
EUC-JP encoding. If I set the field collation to ujis, I can import
the data into the mySQL database through phpMyAdmin. I specify the
source data is EUC-JP and everything runs smoothly and the Japanese
data will display correctly in phpMyAdmin (If the collation is set to
Latin1_ the data is all ????? in both phpMyAdmin and from a PHP
produced page, so I am forced to choose ujis as the collation setting
of the field with Japanese). Of note, the browser encoding setting
when veiwing the data in phpMyAdmin is UTF-8, not EUC-JP. Despite
being viewable in phpMyAdmin, the Japanese will not display correctly
from my HTML page that displays the data regardless of the encoding I
select in the browser (it is all ??????'s). However, if from the HTML
page I edit and save a row with Japanese, the PHP produced page with
display the Japanese correctly in EUC-JP encoding. It also looks
scrambled in phpMyAdmin in the same way as the data in the first table
I describe above.

It appears that regardless of the collation settings in the tables, I
am somehow able to correctly store and retreive Japanese data in EUC-
JP encoding as long as I submit the data from a web form and retreive
it from a web form. If I try to use phpMyAdmin to import/export data
or view data, it seems to be impossible to correctly display the data
but still display the Japanese correctly on my PHP pages. This is a
problem because if I want to dump the data from my tables with
phpMyAdmin I can't get at it, nor can I add new data to my database
using phpMyAdmin. I do have the multibyte PHP string functions
installed, by the way.

Please help me understand what is going on and how I can get data into
and out of my database in the correct EUC-JP encoding.