How can I change an open office document into Microsoft Word?

I need to send a file to someone, but I have open office and they have word, therefore they can’t open it. They’re weird about downloading stuff and refuse to download open office, any way I can change it into a word file?

Answer — open the file in Open Office and then save is as a *.docx. Docx is the Windows Word file format. That way Windows users can open it.