I would like to know how to properly wear Tibetan Buddhist monk robes.
 I have the robes already, however I cannot figure out how the skirt
part is worn or the correct way to wear the shawl.  Thanks very much.

There's some information here that may be useful:

http://answers.google.com/answers/threadview?id=94586

Hi,

You might be able to find out more information if you utilize the
contact information on this page.  They might be able to point you to
more resources, or even be able to answer your questions.

http://www.glbvihara.org/contacts.htm

Doesn't a lesson in the proper wearing of monastic garb come along
with the training by which you earn the right to wear it?

Good point, Tryx.

I asked a friend who is a Buddhist about this, thinking that it might
be considered disrespectful for those who do not walk the walk to wear
the garb. Much to my surprise, my friend shrugged it off and said it
didn't bother him. I don't know whether all Buddhists feel this way,
however.

From what I understand, as long as they are worn respectfully there isn't a problem.