excuse my english.
just for resize images from admin.
in catalog/includes/boxes/best_sellers
Find
'text' => '' . tep_image(DIR_WS_IMG_PRODUITS . $best_sellers['products_image'], $best_sellers['products_name'], SMALL_IMAGE_WIDTH, SMALL_IMAGE_HEIGHT) . '
' . tep_row_number_format($rows) . '. ' . $best_sellers['products_name'] . '');

REPLACE

'text' => '' . tep_image(DIR_WS_IMG_PRODUITS . $best_sellers['products_image'], $best_sellers['products_name'], BESTSELLER_IMAGE_WIDTH, BESTSELLER_IMAGE_HEIGHT) . '
' . tep_row_number_format($rows) . '. ' . $best_sellers['products_name'] . '');

same text in download

Francois.

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