You can actually edit the "Store Owner" and that from the Welcome Email by editing this file:

/home/robomatt/public_html/includes/languages/english/create_account.php

The lines of code reads:

Code:
define('EMAIL_CONTACT', 'For help with any of our online services, please email the store-owner: <a href="mailto:' . STORE_OWNER_EMAIL_ADDRESS . '">'. STORE_OWNER_EMAIL_ADDRESS ." </a>\n\n");
define('EMAIL_GV_CLOSURE','Sincerely,' . "\n\n" . STORE_OWNER . "\nStore Owner\n\n". '<a href="' . HTTP_SERVER . DIR_WS_CATALOG . '">'.HTTP_SERVER . DIR_WS_CATALOG ."</a>\n\n");
The things you should be changing is in bold red.

Don't forget to put it in your template folder within the includes/languages/english/ folder so you don't overwrite the default.