I seem to remember that, in 2008, you could restore a backup to a new copy of a DB, by changing the name in the "Destination Database" field from the restore-wizard. It would create a brand new DB, which is a copy of the original DB restored to the point in time that you wanted. I have not for the life of me figured out how to make SQL 2012 do this.
Now, I understand (thanks to Aaron Bertrand) that this didn't really change, and that 2012 is actually making it more obvious to me that this strategy was a bad idea in the first place!
So, what I need to do is this: Create a new DB, 'MyDB_Copy', from an existing DB, 'MyDB', by using its backup files. We have nightly full-backups (.bak) and every-15-minute TLogs (.trn). I don't want the existing 'MyDB' to be affected/touched at all, because it's "live".
After the MyDB_Copy is created from the main full-backup file, I then need to restore a few dozen TLog backups to get it to a certain point in time.