In our article, "The 7 Elements of a successful awareness program," we identified the first and most critical element was obtaining C-level support. Such support is critical for the success of just about any organizational effort. Their support brings organizational buy-in and authority for your efforts. You can get other departments to support your efforts. While you will still meet some resistance, it is easier to overcome or bypass. Most importantly, you get more funding to put together a respectable awareness program.
security awareness programs - News, Features, and Slideshows
The problem with Security Awareness programs is that it is hard to prove their successes. As with all security countermeasures, success is usually that nothing happens. Ideally, success also means that there is a report of the attempted attack, however that is rarely the case. With technical countermeasures however, logs are usually maintained that allow people to point to all of the prevented attacks.