MS Office XP
This is probably exactly the same as installing 2003, but:
<package
id="office"
name="Microsoft Office XP"
revision="1"
reboot="false"
priority="1">
<check type="uninstall" condition="exists" path="Microsoft Office XP Professional" />
<install cmd='%SOFTWARE%\office\setup.exe /qb /l* %temp%\office10.txt COMPANYNAME="MYCOMPANY"' />
<remove cmd='%SOFTWARE%\office\setup.exe /qb /x' />
</package>