Time and again, accountants and consultants who specialise in small businesses say that such enterprises don't pay enough attention to cash flow. That's the measure of how much money you really have in the business.

Here's the scene: A couple dozen professionals at a big advertising agency quietly type away at computer screens near each other, in an open room devoid of office walls and partitions.

Upgrading brings more speed and power … but is that reason enough?

Guidance for Workplace PC Users