Microsoft may be opening their first retail stores, a la Apple Stores as early as this fall in Scottsdale, Arizona and Mission Viejo, California. No word is available yet about any store launches outside the US but according to eWeek, the Mission Viejo store will open at a mall that includes a successful Apple Store. The Shops at Mission Viejo is an upscale mall that I have visited often during my US trips in Orange County, south of Los Angeles.