Brother MFC-620CN driver, software download including for vista

To get the driver you need to make sure the type of vista you are using normal of 64x. There are also other driver for Brother MFC-620CN Series as below
Windows XP
Windows XP Professional x64
Windows Vista (x64)
Windows 2000
Windows Vista
Windows Server 2003
MAC
UNIX
Linux
OS/2

It is also highly recommended for you to check you registry status to make sure there is no conflict. You can scan your registry from this link click here

You can download the Brother MFC-620CN driver, software and information from this link click here