How to remove "Burn with Nero" from context menu in Windows 7
x86:
regsvr32 /u "%ProgramFiles%\Common Files\Nero\NeroShellExt\NeroShellExt.dll"
x64:
regsvr32 /u "%ProgramFiles(x86)%\Common Files\Nero\NeroShellExt\NeroShellExt.dll"
If you get error message with code 0x80070005, create new shortcut and put appropriate line in it, than right-click that shortcut and "Run As Admin"
Use ShellMenuView or ShellExView to remove the annoying context menu entry.