Join Our Community Button Redirect

Is there anyway to change the "Join our community now" button to redirect to a subscription page? I've tried insterting:
<?php echo stripslashes($tn_blogsmu_featured_intro_button_text); ?>
in line 24 of the panel-home.php file but it didn't seem to do anything. I have also enabled "Users must be registered and logged in to comment) under discussions. Thank you.