Story: Jumped into the management and b2b side of ad production by creating my own business.  While quite able to produce high quality ads at the drop of a hat...currently we lack the contacts to keep workflow, and thus production going fullscale. (New venture so its upward from here, but HOW to build? B2B is not self advertizing like the corner grocer, need to make the effort to contact potential clients.) 

Internet advertizing is all well and good, but I feel that legwork and industry events are a better core builder.

Any ideas who to target and or what events? (Primarily US based business.)

Thanks in advance!