Problem: Can I change my Opening or Closing Sound.
Solution: Go to Control Panel, double click Sounds (or something in that wording). When the new window opens choose the sounds tab and you will see Program Events. In this list there will be Start Windows. There you can browse folders in your computer. However, you must have a .wav file. There are file conversion utillities out on the net if you need to convert a file.
Or go to a search engine and type in your problem