I have been using MS Office (Professional) for 10 years now. It is no longer supported by M$, and some clients are starting to send me files in XLM format. While I have the MSO XLM Compatibility Pack and can read the files, the handwriting is on the wall; sooner or later, I'm going to have to upgrade. A couple of years ago I tried MSO 2007. . . for 2 days. Hated it. So my question is, is MSO 2010 (beta) a true improvement over 2007 and can you give me some idea of the learning curve time to become relatively comfortable with it after using 2000 for so long?