I have a Nvidia 6150SE, and it works fine with Nvidia drivers. Form the lspci command,
VGA compatible controller: NVIDIA Corporation C61 [GeForce 6150SE nForce 430] (rev a2)
There are tow ways to install the drivers for this device. As Eddy1 said, from the package manager on your distro.
The other way is to download the driver from Nvidia. Either will work, if you install the correct driver for your card. You can go here -->http://www.nvidia.com/object/unix.html
to get the driver directly from Nvidia. There are some things to pay attention to. You need to know if your system is a 32 bit or 64 bit system. You need to verify the driver you think you want supports your card. You will see a list of drivers on the above link. The 6150 uses a legacy driver. In my case, 304.125 is the latest driver.
I do not use Mint, so what ever issues that distro adds, I can not comment on. I run Slackware. On slack, after the initial install, a driver named newveau is installed. My system will work with it, however, there is no 3D acceleration with that driver. In order for the Nvidia driver to work, I have to blacklist newveau. If I don't, they will conflict, and the result is a black screen, ( no gui ).
The installation of the Nvidia driver offers me the option to blacklist newveau, I always accept.
The driver package from Nvidia is a .run file, and has to be executed as root user. Running that file installs the driver, does the blacklisting, and all works well.
So, your choice, either use your package manager, or download from Nvidia. I prefer the package from Nvidia, usually it is the latest for my card, ones controlled by a distro may not be the latest.