I assume you want to patch SAS on Windows (Win 7 or Win 8).
1. Exit all SAS sessions, stop every SAS services or Clients running on your machine
for services, launch the Services Manager by typing "services.msc" in a command line
2. Launch a System Command windows as Administrator (Right-Click then Run as Administrator).
3. Execute the following command (the SASRoot folder path may vary with your system) :
"c:\Program Files (x86)\SAS93\SASDeploymentManager\9.3\sasdm.exe"
4. Select "Apply Hot Fixes" and follow the instructions