What do i have to do to enter the code in myspace to customize my profile. and where can i find codes to use in the profile. thank you for your help...

Go here (http://www.myspaceprofileeditor.com/) >> Edit it & copy the code >> Go to your myspace.com profile >> Edit profile >> Paste it anywhere, i.e. About me section.
Or you can simply start from www.lissaexplains.com and learn how to edit it yourself! :)