Everyone knows that reduce, reuse, recycle are the watchwords for the green movement, but transferring those goals into a busy office environment may seem daunting.It doesn't have to be that way. One big problem for many CPA firms is getting rid of old computers. They're an environmental hazard because of the lead and mercury inside, and the data on the hard drives represents a security risk. What to do?Here are a few options, as suggested by Network World. Companies can get a small tax write-off by donating old computers to a nonprofit organization, such as the United Way.