same as nico. i've been using openoffice for five years already.
gets the job done kung mga basic documents, spreadsheets and presentations lang. ang kulang lang nya is yung advanced macro functions ng MS-Excel.

just make sure that if you have created a file, that it is saved on proper format (e.g. .doc for documents/.xls for excel) so you can open these documents in other computers, if needed.

openoffice has come a long way since then... dati nga, i shun using this, prefering staroffice. pero nung nagkaroon na rin ng license cost ang star office, lumipat na rin ako dito.