german umlauts in SQL*plus/Windows w/ WE8PC850 charset

Hi Folks!

Is it possible to display german umlauts in SQL*plus under Windows, even if the Database-Charset is set to WE8PC850? Under Dos, umlauts are displayed correct. In windows, umlauts are displayed as black boxes. I can't use them in queries too. I need something like
alter session set NLS_CHARACTERSET = WE8ISO8859P1; Unfortunately this doesn't work. I tried it with NLS_LANGUAGE but this seems to have no effect on charset.

How can I change the charset to displayed to have the umlauts converted 'on the fly'?

BTW: Setting the Dos environment variable nls_lang to german_germany.we8iso8859P1 alters the nls_characterset but sql*plus does still no convert.

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CU
 Christian Birzer           student of computer science
 E-Mail  : Christian.Birzer_at_t-online.de
 Homepage: http://home.t-online.de/home/Christian.Birzer

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