Read Joel on Software - A Hard Drill Makes an Easy Battle to find out...

...what it takes to get software that works on hundreds of millions of computers. Those of you who develop apps that only have to run on one computer or in a controlled environment have it easy, but you're getting flabby. One of these days you'll need to get it to run on a second computer and you'll need to pull an all nighter, installing a complete development environment on that computer and debugging for two hours, before you discover that you didn't account for the possibility of spaces in the installation file path because the first computer didn't have them.?