Just a short report: I installed ElsterFormular 2009/2010 on Crossover 9.0.0 (Mac) into a winxp bottle. Bottle manager then hangs infinitely determining what applications are installed. No menu/dialog texts were visible until I changed the Windows version on the Wine control panel to win98. Rendering is very poor and slow but the functionality is OK. I could submit my Steuererklärung and get PDFs of the papers.