|The shortcuts to it's various modules should be in the All Programs list:|
Start Button >> All Programs
The list of folders are in alphabetical order, so look at the top of the folder list for "Apache" who are the developers of OpenOffice. Or it may be lower down the list as "OpenOffice".
If you want a shortcut on your Desktop, just right-click the folder and drag it on to the Desktop. Release mouse-button and left-click "Copy here".