Need2know, logon into the admin area (yourdomain/shop/admin),
Under Modules, you will find 'Payment'
THere all the payment mode modules are listed.. you can activate and deactivate any of them..
Manufacturers are under admin -> Catalogue -> manufacturers ..
If you delete all manufactures from there, you won't have manufactures showing up.. but this is just my thought...
Under Configuration -> Product Listing -> there is option to display or hide the product manufacturer name.. try that also..
Or if you want to hard edit the php files, I think you can remove the manufactures block by uncommenting the following:
in /includes/column_left.php
$include_file = DIR_WS_BOXES . 'manufacturers.php'; include(DIR_WS_INCLUDES . 'include_once.php');
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Better you can headover to
http://forums.oscommerce.com for help from pros.
Cheers!