Michael,
  I have no idea whether the approaches work, but I see small space ads in my 
weekly "shopper" newspaper and "flyers" posted in local "copy shops."
So far as college placement offices are concerned, I see flyers & "business 
cards" posted on the boards where they post job news - both for resumes and 
for typing term papers, etc.
  Maybe someone is making a buck dealing only with resumes, but I'd think it 
would  be a hard way to go -- most recruiting and placement firms, as well as 
firms handling "outplacement" when a company downsizes, do a pretty fair job 
for free.  "Do-it-Yourselfers" can always pick up inexpensive software to 
guide them through the process and of course gin out personalized copies as 
you need them.
  Nontheless, good luck.  Maybe someone who actually makes money at this can 
give you better pointers - I just think you need a wider base (like 
brochures, restaurant menus, etc.) or doing more for the resume client than 
typing (guidance, writing, mailing the resumes to target companies, etc.)
Tom
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