Today I connected to my router to check how things where going and saw that there was a computer named "AZTHEBEST" connected. After a few steps I figured out it was my own. The point beeing that I surely haven't changed my computer's name to AZTHEBEST... is there some kind of virus which could have had?
:-$ in that case either you named your computer or you've got something very very strange going on! Have you checked what your computer's name actually has changed in Windows?
(on a Windows XP, 9x) rightClick on MyComputer > Properties > Computer Name Tab > check the value for Full computer name
or
be DOS Window
Click Start > Run > cmd (hit Enter) ( opens a dos window ) > write ipconfig /all you will get the computer name in the 1st line where it says Host Name .....