Windows XP's User Selection Screen
 

I really don't know if this deserves to be in Tilted Programming or Tilded Computers more, but I felt this was the place to post it. My C.O.T. teacher (Computer Operations and Technology) was showing us how to create new users on Windows XP, then got to the User Selection screen that pops up when you turn on the computer. However, when her screen popped up, it had an ad for Info Ed. Internet Service (a local provider here) in the top-left corner. I asked her how she got a picture of their logo on there, and she had no idea...she was then kind enough to offer me extra credit if I can find out how to get that to happen.

Now, I'm pretty savvy with casual computer usage, but when it comes to things like that (I think that involves tampering with the registry?), I have NO idea about. Furthermore, I can't play around with it here at home because I have Windows Me, not XP. While those are just minor troubles, here's the big one: I need extra credit, bad.

Can anyone tell me the general way to do what I just described? Thanks in advance.

Generally, to modify the WinXP login screen, the file logonui.exe is edited. You can find some more info about it here:

http://www.belchfire.net/section-printpage-14.html

System builders and OEM, have a tool, can't remember what it is off the top of my head, that allows them to customize the Logon screen. One of the things they can do is put a logo on it. The place where the computer was purchased from opted to put the logo of an ISP.