Protheus 7 Professional

i'm doing a line follower robot project and using DC motor for the movement of the robot..
the motor driver that i use is L293D. but the problem is,i try to simulate this driver in software protheus 7 professional unfortunately its library did not have this kind of part...
can i update the library?and how?...really need help...

The L293 is just a simple switch with documented saturation voltages. Why simulate it?

yes i know...but i need to simulate it because i want to combine it with other circuit like PIC and sensor...
did proteus have libry to update?can u give me the link and attach it here...thanx..