No offense, but I must register my objections.
1. If you have a drafting department/office/etc. there's a clear need for CAD techs, maybe.
2. If you want the CAD techs to do detailing or other work perhaps the "experienced" engineers "shouldn't be doing" then you should hire younger, inexperienced _engineers_ to do it. There are two-year college programs in Civil Technology (these are not survey technolgists, who I consider invaluable) that produce technicians with Associate's Degrees who apparently are trained in the "practical" (i.e., no calculus-based courses required) aspects of construction and the engineering behind it. From my experience, these folks pretty much position themselves to be construction managers.
3. I strongly believe that "detailers" as a profession are obsolete: this is the job of an engineer. I also believe that draftsmen may be obsolete, though I will acknowledge that skilled drafting itself is vital to the engineering profession.
4. The best source of draftsmen/detailers and such should come from junior and senior-level engineering students or new graduates. An engineer with poorly-developed drafting skills or lacking a solid appreciation (or worse, disdain) for drafting (computer-aided or by-hand) is a blight on the entire field of engineering. At the present time, an engineer with good CAD abilities on a wide variety of platforms/software seems to be preferrable to one with "managment" experience. Which is harder to learn? Is is more productive to have an "engineer" whose contribution in a bind will be to spend a week finding a suitable draftman or one who spends a couple of days doing the drawings himself?
5. I would extend the above to computer work in general. An engineer should be excellent with computers because he (or she) is an engineer and as such we're supposed to be good at these things.
6. Back on subject, sort of... I hate the "tech" courses. They produce smug "technicians" who scoff at engineers because, after all, who needs to understand a proof of torsion? Why's all that math necessary? "It's good enough without an engineered design..." I believe that a fundamental disease currently (and for a long time now) ciculating within the engineering profession is that if you're doing work, you're unsuccessful; work smarter, not harder: that is, don't work at all, pass it off to someone lesser than yourself...
At any rate, check out what your local community college has to offer.