You can run Pashmak in Apache or other webservers.
For running Pashmak in the Traditional webservers, You only need to write a .htaccess file with the following contents:
AddHandler cgi-script .pashm .pashm.html .pit
Options +ExecCGI
DirectoryIndex .pashm
And then, add the Shebang for your Pashmak scripts (.pashm, .pashm.html, .pit).
And make them executable using chmod +x filename.pashm (If you are on UNIX systems).