Cant get my Brother MFC-290C to print with my MacBook Pr. Am I missing drivers?

Yes you are missing the driver

Here is the url from where you can download MAC-OS driver for your Multigunctional printer.

http://welcome.solutions.brother.com/bsc/public/us/ca/en/dlf/download_top.html?reg=us&c=ca&lang=en&prod=mfc420cn_us

Open the page
Select type
Select OS
Select language

Download both pronter and scanner driver.

and install it.

That's it,your printer will work fine.