I'm hoping someone can give me some ideas.  I receive a fatal error attempting to install software for my new HP PhotoSmart C7280 Printer on my Windows XP Dell Computer.  The error occurs attempting to write a file (msi.dot4wrp) to the registry.  After hours with HP Tech Support, it was recommended to me that I reformat my computer to allow the software to load.  I'm hoping for a less drastic solution.  If anyone has experienced similar difficulties, or could offer any assistance, I would greatly appreciate it.