I can’t find my gateway:
1) Check that you have the IP on your laptop setup correctly. It should be 2.0.0.1 and subnet 255.0.0.0
See: 0110 Art-Net Setting an IP address on Windows XP
2) You should be running DMX-Workshop as administrator.
See: 0801 Misc – Using Windows XP Compatibility Mode
3) To find out the IP address of your product, see FAQ Art-Net: Finding the IP Address of a product