You might try VISIO (commercial program for Windows) it has the icons and
everything.
There is a new (to me) product out called ClickNet 2. As an introductory
offer they are including a product called FloorPlan 2.0 (as well as
PhotoFinish 3.0). FloorPlan and/or ClickNet will read the AutoCAD *.DXF
format files already available to you. ClickNet is designed specifically
for diagraming LANs. A collegue is currently evaluating ClickNet...
maybe more in about 3 weeks.
Info on ClickNet Professional 2.0:
PinPoint Software Corp
6531 Crown Blvd, Suite 3A
San Jose, CA 95120
Phone: 800-599-3200
Fax: 800-308-3777
Chuck Bennett
UNC DaVinci: ceb@mstl
Internet: c...@email.unc.edu
MSTL/TEAM Networks Manager
Medical Sciences Teaching Labs
CB# 7520 University of NC
Chapel Hill, NC 27599-7520
Phone 919-966-1134