.Net HttpRequest - Use Googles Keyword Tool

Hello! I need the source code(Vb.net) of a class which can do this: I want to get the Global Monthly Searches via Google Keyword Tool (please use HttpRequest,not sockets, no webbrowser, just HttpWebRequest/Reponse etc) for any keyword. I know that there is a captcha, so please add a code with which I can input the captcha manually and after that the function returns the value of the global searches for the keyword. The function header should look like (Match Type Mode=exact, broad or phrase): Function GetKeywordData(Keyword, Match Type Mode) Thanks and ask if you have questions.