In my opinion, don't teach them .Net since it won't help: A recruitment officer doesn't need to know the difference between a class and a struct when he/she wants to filter candidates.
What they need to know is the job requirements and the technical skills required for this job, and some "buzz words" that may help pick out the candidates.
For example: Is the job server-side oriented or client-side? Depending on the answer, give them some buzz words on that subject, so they'll know to ignore those who are more oriented to what you don't need.
In addition, I think it would help to explain them how to identify who's a "star" according to what they've already done, and is good enough to adapt to your job requirements. Not those who write "Fast and self learner" but according to their "knowledge portfolio", how versatile are their previous jobs, etc.
Good luck!