Using jQuery ajax call in Asp.Net

[Relealoff]

I am somewhat new to ASP. I want to make an ajax call, but I cannot figure our the URL to send to. What on earth is the actual URL to the application? Of course it comes up as http:// localhost : someport/ (spaces added because the link violates SO questions) in the browser. When I try typing in ["index","default"].["asp","aspx","htm","html","asm","asmx"] afterwards I get an error.The relevant JavaScript portion looks like this:\[code\]$.ajax({ "url": "Default.aspx/ProcessReq",\[/code\]And the relevant C# code in my controller looks like:\[code\][WebMethod]public object ProcessReq(string s) {\[/code\]I have added the following to the config file:\[code\]<configuration> <system.web> <webServices> <protocols> <add name="HttpGet"/> <add name="HttpPost"/> </protocols> </webServices> </system.web></configuration>\[/code\]I'm sure I am doing something completely wrong, and I'll stress once again that ASP is fairly new to me. Any ideas?