We must first check if your system has Internet Information Services (IIS). For example in Windows Xp Professional is installed by default in XP Home but no, then you must go and add it with the editing feature of Xp and insert the cd of the operating system.
If you enter your Internet Information Services (IIS), but you did it after installing Framework. NET aspx pages still do not work because in this case you dinstallare on. NET Framework and reinstall it.