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    You need to add a folder call 'preloads' and create a file inside called 'core.php' for each of those modules.
Inside myReferer/preloads/core.php use:
 class MyRefererCorePreload extends XoopsPreloadItem 
{ 
    function eventCoreHeaderStart($args) 
    { 
        include XOOPS_ROOT_PATH . '/modules/myReferer/record.php'; 
    } 
 
} 
?>  
Inside uservisit/preloads/core.php use:
 class UservisitCorePreload extends XoopsPreloadItem 
{ 
    function eventCoreFooterStart($args) 
    { 
        include XOOPS_ROOT_PATH . '/modules/uservisit/index.php'; 
    } 
} 
?>  
Did not test it.
[EDIT] I did not saw Dylian post, it may need the use of globals, I did not check the module code.