> Plenty of people are using Word, Powerpoint, and Excel 2003 just fine
Are you claiming that a reasonable majority (for the sake of discussion) of this plenty of people are using Office 2003 on Windows XP machines??
I'd doubt it. More like there's plenty of people using old software in modern versions of Windows. The maintenance work, of course, exists and has been done indirectly, by Microsoft, in the development iterations of Windows itself.