For 1.80 and newer set a different redirect page in theme options:
For older themes:
You need to go into ajaxcall.js and at line line 1077 you have
There is this code at line 1102
document.location.href = ajaxcalls_vars.login_redirect;
Replace ajaxcalls_vars.login_redirect with your new link
Replace get_dashboard_profile_link with your own link in css_js_include.php file.