[JKI]

For Windows:
LVRunTimeEng.exe (see here for detailed installation instructions)

For Mac OS X:
LabVIEW821RuntimeEngine.dmg (see here for detailed installation instructions)

For Linux:
labview82-rte-8.2.1-1.i386.rpm (see here for detailed installation instructions)
labview-rte-aal-1.1-1.i386.rpm

Linux Installation Instructions (more info here):

• Run (must be logged in with root access for the machine)
  rpm -Uvh labview-rte-aal-1.1-1.i386.rpm
  
• Run (must be logged in with root access for the machine)
  rpm -Uvh labview82-rte-8.2.1-1.i386.rpm

If the above links do not work then go to the main NI downloads page and locate it yourself by navigating to the LabVIEW 8.2.1 run-time engine download for your operating system.

See also:

• Which LabVIEW Run-Time Engine do I need?