[TYPO3] ImageMagick can't be found on Mac OS 10.4

[axel gruber]

Hi folks,

The InstallTool won't find ImageMagick on my MacBook (INTEL, Mac OS 
10.4.9 with X11, PHP Version 5.1.4 www.entropy.ch Release 5, TYPO3 
4.1.1).

I took the folowing binary package:
http://www.imagemagick.org/download/binaries/ImageMagick-universal-apple-darwin8.9.1.tar.gz
configured 

it in Terminal:
export PATH="/usr/local/ImageMagick-6.3.4/bin:$PATH"
export DYLD_LIBRARY_PATH="/usr/local/ImageMagick-6.3.4/lib:$DYLD_LIBRARY_PATH"
export MAGICK_HOME="/usr/local/ImageMagick-6.3.4/"
THE COMMANDS identify, composite and convert ARE ALL WORKING FROM THE BASH!!
(just display didn't: "display: unable to open X server `'." but I'd 
guess its not needed anyways)
the priveleges are like this: -rwxr-xr-x   1 root  www  67904 Jun 13 
01:34 convert

in localconf.php I got the following settings:
$TYPO3_CONF_VARS['GFX']['im'] = '1';
$TYPO3_CONF_VARS['GFX']['im_version_5'] = 'im6';	
$TYPO3_CONF_VARS['GFX']['im_path'] = 
'/usr/local/ImageMagick-6.3.4/bin/';	// also tried 
'/usr/local/ImageMagick-6.3.4/'
$TYPO3_CONF_VARS['GFX']['im_path_lzw'] = 
'/usr/local/ImageMagick-6.3.4/bin/';  // also tried 
'/usr/local/ImageMagick-6.3.4/'
$TYPO3_CONF_VARS['GFX']['im_combine_filename'] = 'composite';
$TYPO3_CONF_VARS['GFX']['im_v5effects'] = '';	
$TYPO3_CONF_VARS['GFX']['im_no_effects'] = '0';
$TYPO3_CONF_VARS['GFX']['im_mask_temp_ext_gif'] = '0';
$TYPO3_CONF_VARS['GFX']['im_negate_mask'] = '0';
$TYPO3_CONF_VARS['GFX']['im_imvMaskState'] = '0';

But InstallTool / Check Image Magick still tells me:
" No ImageMagick installation available
It seems that there is no adequate ImageMagick installation available 
at the checked locations (/usr/X11R6/bin/, /usr/bin/, 
/usr/local/ImageMagick-6.3.4/bin/, /usr/local/bin/) "

Do you have any ideas, what to change?
It seems like I'm not the only one dealing with this problem...

Thanks in advance
axel