Can we alter the Login redirect?

Hi there, if a user buys something from your website, ZenCart creates and account for them. When a user goes back to login into their account, it redirects them to a page which seems to show all categories.

Is it possible to change it so that it goes into their account instead?

in the includes/modules/pages/login/header_php.php file.
Look at:
$_SESSION['cart']->restore_contents();
// eof: not require part of contents merge notice

add below:
zen_redirect(zen_href_link(FILENAME_SHOPPING_CART, '', 'NONSSL'));

FILENAME_SHOPPING_CART - name for your shopping cart page.
so you need find one for account
FILENAME_ACCOUNT (may be)

Be sure to make backups before changing things.