I figured it out after looking through the HTC Mobile Guide App. I guess it helps to look through the instruction manual sometimes.
1. Go to Settings
2. click on Personalize
3. on the bottom right click on Sound
4. Now you have access to change the notification sounds to email, text, phone, calender, and task. you also have access to change ringtone and alarm.
One thing I learned from this is to read the manual before I frustrate myself.