Regarding my email woes, a couple people sent me mention of a program called SCANPST.EXE. Apparently, it installs with Outlook. (I found it by searching.) I ran it on my >300MB PST file, and (after several hours of analysis) it told me there were only minor problems with it and repairing it was optional. But I repaired it anyway and, voila, my Outlook is no longer crashing. Thanks for the tip, Evan and Jeff! Update: It's crashing again. :( Update: David says, "compact your folders!" That had occurred to me, but I forgot where to do that. Found it. Working on it...