<?php if (current_user_cannot("access_s2member_level1")){ ?>
	Content for Members who CANNOT access Level #1 on this Blog.
<?php } else if(current_user_cannot_for_blog(24, "access_s2member_level1")) { ?>
	Content for Members who CANNOT access Level #1 on Blog ID# 24. (i.e., Multisite Networking)
<?php } else if(is_user_not_logged_in()) { ?>
	Some public content.
<?php } ?>