[VirtueMart 1.0.7 stable; Joomla 1.0]

master.. please help..
hii.. i have error in virtuemart..

first problem is i lost my index.php in root directory, before that cases virtuemart is running well.. can show the product..

then i restore index.php file with my back up index.php

but after that the product is not shown (There is no category)
(index.php?page=shop.browse&category_id=1&option=com_virtuemart&Itemid=1&vmcchk=1)

it only show at product details (index.php?option=com_virtuemart&page=shop.product_details&flypage=shop.flypage&product_id=1061&vmcchk=1)

i see in mysql the product is exist..

and i can't change price product at admin joomla.. (index2.php?page=product.product_form&limitstart=0&keyword=302884&product_id=1061&product_parent_id=&option=com_virtuemart)

anybody knows how slove my problem??

thanks..