Index: app/ui/src/bundle/org/sakaiproject/tool/gradebook/bundle/Messages.properties
===================================================================
--- app/ui/src/bundle/org/sakaiproject/tool/gradebook/bundle/Messages.properties	(revision 112426)
+++ app/ui/src/bundle/org/sakaiproject/tool/gradebook/bundle/Messages.properties	(revision 112427)
@@ -183,15 +183,15 @@
 course_grade_details_log=Log
 course_grade_details_log_type=Grade
 course_grade_details_log_title=Grade Log: {0}
-course_grade_details_calculate_course_grade=Calculate Course Grades
-course_grade_details_null_msg=Currently, the gradebook does not include gradebook items that have not been graded in the course grade calculation. This could result in a higher course grade for a student. To include a gradebook item in the course grade calculation, you must enter a grade of zero or higher.  If you want to enter zeroes for any gradebook item that has not been graded and then re-calculate the course grade, click Calculate Course Grades. 
+course_grade_details_calculate_course_grade=Set Ungraded Items to Zero
+course_grade_details_null_msg=Currently, the gradebook does not include gradebook items that have not been graded in the course grade calculation. This could result in a higher course grade for a student. To include a gradebook item in the course grade calculation, you must enter a grade of zero or higher.  If you want to enter zeroes for any gradebook item that has not been graded and then re-calculate the course grade, click Set Ungraded Items to Zero. 
 course_grade_details_null_msg_ta_view=Currently, the gradebook does not include gradebook items that have not been graded in the course grade calculation. This could result in a higher course grade for a student. To include a gradebook item in the course grade calculation, you must enter a grade of zero or higher.
 course_grade_details_grade_display={0} ({1}%)
 
 # Calculate Course Grade page
-calculate_course_grade_name=Calculate Course Grades
-calculate_course_grade_message=Currently, the gradebook does not include gradebook items that have not been graded in the course grade calculation. This could result in a higher course grade for a student. To include a gradebook item in the course grade calculation, you must enter a grade of zero or higher. 
-calculate_course_grade_action=If you want to enter zeroes for any gradebook item that has not been graded and then re-calculate the course grade, click Continue. Please note that this action is irreversible. 
+calculate_course_grade_name=Set Ungraded Items to Zero
+calculate_course_grade_message=WARNING: Clicking continue will assign a grade of zero to all ungraded items in this gradebook. This action is irreversible.
+calculate_course_grade_action=The gradebook automatically calculates the class grade for students as items are graded.  However, ungraded items are not included in this grade. This may result in an unintentionally higher course grade for a student who has ungraded items.
 calculate_course_grade_continue=Continue
 calculate_course_grade_cancel=Cancel
 calculate_course_grade_done=Course Grades have been calculated
Index: app/ui/src/webapp/calculateCourseGrades.jsp
===================================================================
--- app/ui/src/webapp/calculateCourseGrades.jsp	(revision 112426)
+++ app/ui/src/webapp/calculateCourseGrades.jsp	(revision 112427)
@@ -9,7 +9,7 @@
       
       <h2><h:outputText value="#{msgs.calculate_course_grade_name}"/></h2>
 
-	  <p class="instruction"><h:outputText value="#{msgs.calculate_course_grade_message}" /></p>
+	  <p class="messageConfirmation"><h:outputText value="#{msgs.calculate_course_grade_message}" /></p>
 	  <p class="instruction"><h:outputText value="#{msgs.calculate_course_grade_action}" /></p>
 	  
 	  <p class="act">