Hi Jos,
You want to import the solution ? I assume you are using Servoy 4.x. because that doesn't let you import the solution straight in the workspace (yet).
What you must do is launch Developer and then open a webbrowser.
Point the webbrowser to
http://localhost:8080/servoy-admin/Go to the Solutions link and click on Import Solution.
(this is enough if you just want to load the solution in the repository and load a client from Servoy Server)
After the import you can close your browser and go to the Solution Explorer in Developer.
Here you right-click on the "All Solutions" node and select "Checkout".
You get a dialog with Localhost already filled in. Just keep the rest blank and hit the Next button. Here you select the solution (select HEAD) and press finish.
Now the solution is in your workspace and you can run it.
Hope this helps.