How to make partial cylinder 3ds max 6

I am new to 3ds max and I find in some instances the simplist thing you want to do can be the most ellusive and to back it up that there are 10 to 100 different ways to do something.

What I want to do is create a partial cylinder (see attachement) that I can put on the face of my structure. How do I do this? I am looking for the most direct and simplist approach.

Thanks for any help.:sailor: