Hey, guy -
Assuming you went with the default installation directory, there should be a couple of short documentation files in c:\program files\planetside software\terragen 2 yada yada\docs. Look at win_command_line.txt - I think it contains the information you'd need to set up a sequential render.
A couple of other users here have developed render management packages to help split jobs over various machines. I think Dark_Fire wrote one, IIRC. You'd have to ask them for more detail - I haven't tried them yet.