Apple's marketshare is creeping upward, according to this MacCentral article:
For the current quarter (Q1, 2002) IDC shows Apple as the number six computer maker with a 3.48 percent market share. This is an increase of 0.4 points over Q4 2001 and a 0.25 point increase year over year. Worldwide, Apple is in ninth place with a 2.4 percent market share.
As well, Apple is implementing a new "Mac Pack" service at Apple Stores which involves installing software, setting up your internet account as well as moving your files from your PC to the Mac.