I recently downloaded some Preplogic practice exams on my xp pro PC. In the download There was mention of something called ASP.NET.
I then noticed that my screen saver now requires me to click my user name to get back to the desktop. Further investigation shows a limited account "ASP.NET machine A..." has been set up. I guess this explains why windows is asking me to select a user, but what is this and can I delete the user. I paid money for the practice test so don't want to do anything which will stop them working.
Although ASP seems to be something to do with MS, I'm a bit wary of software that needs it's own user account, albeit a limited one.