If you want to turn off the descriptions that poppup when you place the cursor
above desktop icons or Explorer objects, you can use the following registy hack:
Hive: HKEY_CURRENT_USER
Key: Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
Name: ShowInfoTip
Type: REG_DWORD
Value: 0 disable
Value: 1 display info tip
This tip is a Windows NT / Windows 2000 / Windows XP tip.