I have just finished a QGis Portable How-to for Lisboa 1.8.
Vum DevineMe matgedeelt de(n) 7. Mee 2013 op English.I been using QGis with map data in portable mode for a while. I have finally gotten around to writing a how-to on my SourceForge site. Process is pretty strait forward with all scripts available in a download. Article is located here