This is what I see every day when I log into Vista at work. It's an error dialog that ironically says "The operation completed successfully". And you can see the Apache logo on the task bar.
So, apparently Vista thinks starting Apache successfully is an error. :-)
For you people who want "just the facts ma'am".
Q. Where is the file or folder that I thought I created in Vista under the "C:\Program Files\[My_App]" folder?
A. It is under "C:\Users\[your_account]\AppData\Local\VirtualStore\Program Files\[My_App]". This is because Vista doesn't think that you should write to your "Program Files" folder, so it tricks your programs into writing into the "VirtualStore".
Now, to the story if you're bored and wonder why I know this...