Among the things we all have to do (even those of us with Macs) is debug Javascript for Internet Explorer. The JS Engine is quirky and dumb, and other than memory management and garbage collection, they have done hardly anything to the annoyances of their particular implementation of the language. But they are the big gorilla, so sites have to run on it. I was using the Microsoft Script Debugger but apparently there is a way to use Microsoft Visual Web Developer express for the same purpose, provided you do the workaround Bernie outlines on his site.
Microsoft have released an excellent free edition of Visual Studio for web development called Visual Web Developer, but among the features reserved for the professional edition is the ability to connect to a process. Hence when you get a JavaScript error in a web page, VWD won’t appear in the list of possible debuggers.
[From BernieCode » How to debug JavaScript with Visual Web Developer Express]
I just wish I didn’t need 1.7Gb of Hard Drive Space just to run a debugger. Darn white elephant.