In Windows, there's only one system path variable. That variable (PATH) can, however, include many paths, each separated by a semicolon. There is a limit to the length of the PATH system variable, but it's quite large.
If you want to see the path, open a Command Prompt window (on Windows 7, type cmd.exe in the Search box and press Enter; on Windows XP, click Start, then click Run, then type
cmd.exe
in the "Open" box and click OK).
In the black Command Prompt window type
path
and press Enter
Here, for example, is a PATH variable from a Windows 7 Pro x64 computer (normally, it's just a single long string; I started each separate path on a new line for readability) (note the newly-added last line where I didn't use capitalization -- but that's OK):
PATH=C:\Program Files\Common Files\Microsoft Shared\Windows Live;
C:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live;
C:\Program Files (x86)\IBM\WebSphere MQ\Java\lib;
C:\Program Files (x86)\Intel\iCLS Client\;
C:\Program Files\Intel\iCLS Client\;
C:\Windows\system32;
C:\Windows;
C:\Windows\System32\Wbem;
C:\Windows\System32\WindowsPowerShell\v1.0\;
C:\Program Files\Intel\Intel(R) Management Engine Components\DAL;
C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;
C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;
C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT;
C:\Program Files (x86)\Common Files\Acronis\SnapAPI\;
C:\Program Files (x86)\Acronis\TrueImageHome\;
C:\Program Files (x86)\IBM\WebSphere MQ\bin64;
C:\Program Files (x86)\IBM\WebSphere MQ\bin;
C:\Program Files (x86)\IBM\WebSphere MQ\tools\c\samples\bin;
C:\Program Files (x86)\Windows Live\Shared;
C:\Program Files (x86)\Intel\OpenCL SDK\3.0\bin\x86;
C:\Program Files (x86)\Intel\OpenCL SDK\3.0\bin\x64;
C:\program files (x86)\common files\apple\apple application support\