Hi yogesh,
Just to clarify (please correct me if I am wrong as your English is not the best in the world):
You are tasked with creating a web application that will upload resumes.
When a resume is submitted, this web application has to run a desktop application that saves the resume somewhere (file system, database, it is irrelevant at this stage).
If I am right so far, then as I understand it you have already created this web/desktop application pair. And now you need to know how to load-test it.
From where I'm standing it's quite simple - get a bunch of your friends to submit their resumes through it 10 times each, at the same time - if you have 5 friends that can do this then it's a good start!
Best regards,
medicineworker