For Desktop or Tower Workstations,

NVIDIA
NVIDIA uses a (Unified Driver Architecture) for their Quadro FX series of Video Cards. Meaning that most of these cards will use the same driver number. This also makes it easier for SolidWorks to test and certify these drivers for all cards.  The last four digits of this driver tell you what number your system is using. 6.14.10.9136, the new driver is the .9136 for Windows XP.

The latest certified 32 Bit driver may be downloaded here.

The latest certified 64 Bit driver version may be downloaded here

ATI
ATI uses standardized SolidWorks Certified drivers for several of their series of FireGL cards.

For 32 Bit versions Fire GL V3300/V3400/V5200/V7200/V7300/V7350
The latest certified 32 Bit driver may be downloaded here.

For 32 Bit FireGL V3100/V3200/V5000/V5100/V7100
The latest certified 32 Bit driver may be downloaded here.

For 64 Bit versions Fire GL V3300/V3400/V5200/V7200/V7300/V7350
The latest certified 64 Bit driver may be downloaded here.

For 64 Bit FireGL V3100/V3200/V5000/V5100/V7100
The latest certified 64 Bit driver may be downloaded here.

For Laptops/Notebooks
Check with your system vendors for ISV certified drivers for SolidWorks.

If you are uncertain what version you should use, check this link and search under the system vendor.