Do you mean solaris 10? Please update your user profile for us to know the exact version you're running.
By the way, there are plenty of examples, including in linuxquestions.org.
See, for example,
Another questions:_before_ installing solaris, did you check if your NIC is supported by a Solaris or a third party driver? Did you check the HCL or did you check your hardware with Sun Device Detection Tool?