When my town made the decision to switch, it was a comparison between google and a standard exchange upgrade. I don't believe 365 was even considered. The decision, like so many things now, was...
Windows XP Support ToolsCommented on: 9 years ago
(May 27, 2005)
OH.EXE is not included in the XP support tools installation. You much get it from the server support tools, or as an individual download from M$.