That would be the second step I think. But first, I need t odefine my own size, for example:

Change:
Code:
<a href="' . zen_href_link(zen_get_info_page($xsell_query->fields['products_id']), 'products_id=' . (int)$xsell_query->fields['products_id']) . '">' . zen_image(DIR_WS_IMAGES . $xsell_query->fields['products_image'], $xsell_query->fields['products_name'], SMALL_IMAGE_WIDTH, SMALL_IMAGE_HEIGHT) . '</a>
To:
Code:
<a href="' . zen_href_link(zen_get_info_page($xsell_query->fields['products_id']), 'products_id=' . (int)$xsell_query->fields['products_id']) . '">' . zen_image(DIR_WS_IMAGES . $xsell_query->fields['products_image'], $xsell_query->fields['products_name'], MYOWN1_IMAGE_WIDTH, MYOWN1_IMAGE_HEIGHT) . '</a>
..and be able to define a custom width/height to MYOWN1. Get me?

Thanks!