LittleLe3Lue, try setting up a virtual directory in IIS and setting permissions so you can run scripts. Write a simple asp.net file in notepad and save into the virtual directory you created, remembering to save with an .aspx extension and selecting All Files in Save dialog so notepad doesnt save the file (filename.aspx.txt).
Open IE and type in you computer name followed by \ and the asp.net file name.
This will determine if your ASP.NET installation is working, loads of problems are caused by installing IIS after .NET or by re-installing IIS after the .NET framework, either one and you need to follow Cassio post.. or look on MSDN for installing IIS after .NET and you should find the command you need.
Once you know your ASP.NET Installation works it is easier to fix the fault within the IDE.