Assuming that it’s the Windows version of WD that you want to use, there is an FAQ about setting that up to read from Meteohub here:
I think the version you’ve noticed is the special ‘console’ version of WD that actually runs on a suitably prepared NSLU2?
So far as I’m aware you cannot run that on a NSLU2 that also has Meteohub on it, and if it’s ‘presentation’ that you are interested in then you probably want the full ‘GUI’ version rather than a ‘console’ version anyway.