Searching for Office products isnt quite a simple process because of two things.
1) Microsofts inconsistant naming conventions
2) The way Altiris pulls information about applications
However I have made a query to track all versions of all the 2007 office apps. First, create a report and paste the following SQL into it. This should give you a full count of the installations of any application within the office 2007 series.
SELECT COUNT(* ) AS 'Count',
[name],
version
FROM inv_aex_os_add_remove_programs
WHERE [name] LIKE 'Microsoft Office%2007'
GROUP BY [name],version
ORDER BY [name]
If this produces too many entries give me the names of the application suites you are looking for and I can create filters for it.