I have installed the CAP v1.4.3 into OSC v2.3.1 it works well after removing the meta tag and inserting required template_top.php in catalog/account_add.php & account_manage.php. Change "tep_image_button('button_whatever.gif' , IMAGE_WHATEVER)" replace with "tep_draw_button(IMAGE_WHATEVER)"....thats it... Know bugs that I need help with add/preview, manage/back, manage/cancel, edit/preview buttons functions, I can't seem to get these working properly. your professional help or advices will not go unnoticed.
Link to contribution: http://addons.oscommerce.com/info/2890/v,22