error in opening asp.net application

[karthik84]

i am having the error in opening the asp.net application open and create of the web project located the following url "http:/localhost/webapp" the server name and the address could not be changed

its irritating i am new guy who would like to start the asp,net application ,please help me to get out of the problem

thank u
karthik

[kenobewan]

Is this creating a new project or opening an existing one? Have you used IIS and Visual Studio - which versions?