If you look here, I included a copy of the plist from NVDANV50HAL:

Look in the list to see if your card is supported.
The device id for my card is 0612. As you can see in the list above 0600 will cover this.
There is also cover for cards such as:
{ 0x0420, "GeForce 8400 SE" },
{ 0x0421, "GeForce 8500 GT" },
{ 0x0422, "GeForce 8400 GS " },
{ 0x0423, "GeForce 8300 GS " },
{ 0x0424, "GeForce 8400 GS " },
{ 0x042C, "GeForce 9400 GT" },
{ 0x042F, "Quadro NVS 290" },
{ 0x0600, "GeForce 8800 GTS 512" },
{ 0x0601, "GeForce 9800 GT" },
{ 0x0602, "GeForce 8800 GT" },
{ 0x0604, "GeForce 9800 GX2" },
{ 0x0605, "GeForce 9800 GT " },
{ 0x0606, "GeForce 8800 GS" },
{ 0x0610, "GeForce 9600 GSO" },
{ 0x0611, "GeForce 8800 GT " },
{ 0x0612, "GeForce 9800 GTX/9800 GTX+" },
{ 0x0613, "GeForce 9800 GTX+" },
{ 0x0614, "GeForce 9800 GT " },
{ 0x061A, "Quadro FX 3700" },
{ 0x0622, "GeForce 9600 GT" },
{ 0x0623, "GeForce 9600 GS" },
{ 0x0640, "GeForce 9500 GT" },
{ 0x0641, "GeForce 9400 GT " },
{ 0x0643, "GeForce 9500 GT " },
{ 0x0644, "GeForce 9500 GS" },
{ 0x0645, "GeForce 9500 GS " },
{ 0x06E0, "GeForce 9300 GE" },
{ 0x06E1, "GeForce 9300 GS" },
{ 0x06E2, "GeForce 8400" },
{ 0x06E3, "GeForce 8400 SE " },
{ 0x06E4, "GeForce 8400 GS
If you find it does not work, directly overwrite the device id that is nearest to yours. You will have to copy NVDANV50HAL to your desktop. Open it up, edit the Info.plist with text edit then use permissions repair script to fix your kext permissions.