Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Find an alternative to ZoomBrowser

This is my second digital Canon camera, the first is a G3. Both are great! The problem is that the supplied software, ZoomBrowser, has serious problems, at least on Windows XP Professional. After installing the software for the SD900 under one userID, ZoomBrowser will not run under any other userID. The problem appears as a "Critical Error" "Invalid class string". A google search indicates that this is not an uncommon problem, and Canon is pretty unresponsive in providing a solution. After a couple of email exchanges with Canon, I'm not optimistic that they have capable user support -- at least for software.