Relocate all files to folder checkbox unavailable sql server 2012 Using SQL 2012 Enterprise edition

Following instructions here for restoring a backup:
http://msdn.microsoft.com/en-us/library/ms186390.aspx#Restrictions

I need to be able to rename the database because it is the second copy on the instance (testing purposes). But I cannot rename it nor change the folders that it will restore the MDF/LDF files to.

For whatever reason the "Relocate all files to folder" checkbox is not available.

Restoring form a SQL 2005 backup.
Try to do this with T-SQL:

restore database YourDatabase_NewName
from disk = 'C:\YourDir\YourDatabase.bak'
with
    move 'YourDataFileName' to 'C:\DataDir\DataFile.mdf',
    move 'YourLogFileName' to 'C:\LogDir\LogFile.ldf'
go