include a opamp LM741 model in gnucap

[mukesh_421]

hi everybody,
i want to include a spice model for opamp LM741 of National Semiconductor.i have already worked nicely with resistor, capacitor and diode(1N 4004) can any body help me,i have already the LM741.mod file but don't know where and how to include it to get my work done.
i have included some code of diff741.netdiff741.net
thanks