This is done via a technique known as a loadable driver; the actual hardware driver is loaded into the system dynamically. Since devices can be loaded and unloaded they do not have to be compiled into the system kernel.
first, make a file. in the file you type in the command's name. an example would be the command date. name the file what you want to call that command. when you use the command, type in cat filename...
Your system administrator will have to assign you a username and password. Then, find the address of the system to log into and supply the correct credentials. Use telnet or even better, an SSH...