How shall I edit the Smiley Part of phpBB that my board can show as big smileys as yours? my ones are already shown as small as the standart smilies O.o

The admin page has a part on smileys.
But first, you have to upload your custom smileys to the smilies directory
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well as menstioned..the smiles are always shown very small ... (that mean i already upped and added them, otherwise i couldnt know that they wont work well )
Like you can see, my smiley part next to the Textfield, isnt as big as yours here did you edit it?