Just got my shiny new MacBook Air and am trying to migrate from Win7 to OSX. Here's a question about folder locations in the OSX user space. I want to have my user data on a NAS not in the MBA local SSD. I can mount the NAS share using the User login items in System Preferences but I can find no info on where the apps store their data. e.g. in iMail, where does iMail store the emails ? In Outlook there is a *.pst file that can be moved anywhere (within limits). How can I get iMail to look for a "Mail Store" on a share on the NAS ? Until I can solve this, I'm forced to use Win7 in Parallels where I know how to get Outlook, Word, Excel etc to work with NAS shares. Thanks.