Yes, usernames with spaces are going to be an issue. Can’t help you there. In Unix/Linux often times though from the command prompt you can get around issues like folders/files with spaces in their names by enclosing the names in double quotes. I wonder if EX2 will let you create an user name with space if the username is enclosed in double quotes…I dunno, but worth a shot.
And yes, I can understand that you can’t ask the Windows users for their passwords…that’s gonna be an issue. The only awkward way to resolve that is to setup the usernames without setting a password (i.e. password is turned off) and then go to each of your users’ desks and using their computers’ you login to the web dashboard and then turn on the password switch, which’ll prompt them to enter their passwords. At this point you can ask them to enter their Windows passwords.
I believe if you don’t sync the passwords, it’ll still work as long as the usernames match but they’ll be prompted to enter whatever password you decide to setup their EX2 usernames with. It’s kinda difficult to use these kinds of things for an office environment.
However, if you use Windows Active Directory for your office network then you can add the EX2 to that and your users can be created based on their Active Directory profiles and therefore will be able to use their windows usernames nd passwords. You’ll have to lookup the EX2’s PDF manual on how to do that. You can find the setting to join Active Directory from dashboard’s Settings -> General -> Services section (near bottom of page) -> Active Directory.