I am trying to open sertain books but it asks for a vendor id, when I type it in it tells me it is incorrect

I have authorized my new computer with my adobe id.  I still can't open certain books, when I try it asks me for a vendor id.  I have contacted my vendor and they say it is the same as my adobe id.  But when I enter it the program say that it is incorrect

Nope, the AppleID is a email address and a different password from the Admin account name and password you setup on the machine when you first got it.
So use the Admin name and password, if you don't know what it is.
If you only have one user (it's a Admin) set up on the machine, then look in System Preferences > Accounts for the name.
If you need to reset the password to a new one, hold the command and r keys and restart the machine under the Apple menu.
A new type of screen shows up, select Terminal and type resetpassword and press enter, follow instructions to reset your password.
(If on 10.6 Snow Leopard, use your 10.6 disk, reboot form the disk holding the c key down and look under the Utilities menu for the Password Reset Utility.)
If you need assistance in installing Flash, read this post
How to install Flash, fix problems

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