Hi Armadillo
Yes, it will run on any Windows Mobile OS as long as it is Version 5.0 or higher. Just a quick word of warning though, make sure it is a FULL version of Windows Mobile and not a 'lite' version that doesnt support DLL libraries as i have only come across this once and i think the phone was imported from a less than reputable source. It was probably a one-off but just thought it worth mentioning
Brad