As the author of connectCAD, I'd just like to intervene here. Our software does let you make rack drawings like Nick's we just don't provide ready-made symbols for the front panels of equipment. The reason for this is that it's a huge amount of work to get all this information and repackage it...
Just to update this thread, our product is now called 'connectCAD' and we are fully compatible with the latest Vectorworks software. Please visit our site connectcad.com for more information.