FYI, I ALSO set screenshot captor preferences dialog to start with windows in my WinXP Home SP2 system yet still have to close the task bar icon as originally stated.
You know, another issue is how the "crop" function operates.
One of the most useful features of your program is the ability to crop images. However, after hitting the print screen key and clicking the crop icon, sometimes I'm simply able to click and resize the image holding down the mouse button but most of the time, I have to adjust the borders (top, bottom, left and right) manually.