I cant get the Sketchup Plugin to work.

I have downloaded the trial version and created an account. I wish to use the DXF exporter.
However, when I try to use the DXF export function in SU there is a prompt that I need to sign in using my username, login and "Hardware". I know the two first since I just registered, but I figure I need to write something in the "Hardware" field.

Help??

BR

Stefan