First time Web HTTPrequest project

Question

I need to read an internal web page and collect details that appear in columns. I used FIDDLER to capture what the GET request looks like so I can retrieve the result. However not knowing what is the best C# Web class to used It is not clear on how to start. FIDDLER "raw" capture shows the GET and I'm trying to mimic it in my code. The result in my code returns that I need "Frames and JavaScript" I don't know how to proceed. This is my request for help.

 

Below is the raw collection from FIDDLER. 

GET http://localhost:8819/clm/servlet/com.internalserver.abc.application.hlm.csc.clm.ui.ClmServlet?page=PageProductFeatures&container=967456200&isRemoteStandAlone=0 HTTP/1.1
Accept: text/html, application/xhtml+xml, */*
Referer: http://localhost:8819/clm/servlet/com.internalserver.abc.application.hlm.csc.clm.ui.ClmServlet?page=PageToc&setSelection=CNT
Accept-Language: en-US
User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; Trident/7.0; rv:11.0) like Gecko
Accept-Encoding: gzip, deflate
Host: localhost:8819
Connection: Keep-Alive
Cookie: clm.expertMode=0; JSESSIONID=BFCFECE73003A6CC37CFCA412D966C44

Someone suggest "some tool that can render the HTML first" but i am not clear on how to proceed. Can anyone help?