Imagine you're deploying new PCs around your small office. Most are standard midtower desktop systems, but your top executives want something sleeker, and a few front-of-house personnel need space-saving systems to preserve precious desk real estate. Wouldn't it be great if all these computers shared the same configuration? That's precisely the idea behind Dell's OptiPlex GX620 business system. While our review unit included a 17-inch flat panel and came housed in a small-form-factor case, the same configuration is available as a desktop, a midtower, or an ultra-small-form-factor PC, the last of which comes in a slim, upright case that reminds us of the tiny Dimension 5100C's. With a few exceptions, you can configure each type of system with identical features.All four OptiPlex GX620 case designs share the same dull black-and-gray design and blunt, squared-off front panel. But at least you can tuck the small-form-factor and ultra-small-form-factor cases out of view if you use Dell's nifty optional telescoping LCD-monitor stand, which we received as part of our review system.