The blender 2.5 GUI is a really huge improvement over the 2.4-Versions - absolutely thumbs up for this :-)
Then I tried to print something using the support material option of skeinforge for the first time. The support-material can be activated in the "Raft" Section of the skeinforge settings. Make sure you set "Support Inset over Perimeter Extrusion With (ratio)" to some negative value - I used -3 - or else your support material will stick to your model.
After printing for roughly 2h it came out like this
It turned out to be a bad idea to set the "inset over perimeter" Parameter to zero - so I had to work real hard to remove the support material. But after 2h i finally made it, and my wizzard looked like this
Then I used some acrylic paint and - Tada! - my final version