look for an openoffice directory in your home directory. the executable should be somewhere like:
Code:
/home/user/OpenOffice1.1.2/soffice
or
Code:
/home/user/OpenOffice1.1.2/program/swriter
where "user" is the username and "OpenOffice1.1.2" is the name of the openoffice directory. from there you can add shortcuts, etc.
it should have done it automatically in kde, but it depends how you installed it. did you do it through a package manager or did you install manually?