.net dll and win app (C# vs2008)

I need a small dll that i can pass a domain name to and it return a google api key. we will pass a string to the dll, it will need to hit the google page <[login to view URL]> and then pass the string to the correct input and check the check box, then it will need to parse the next page to get the api string. i want a dll for this to be used in my cms but for testing and proof of work, i want a exe that allows input of a domain and then returns the string value from google. I need good clean code on this, nice oop, good use of .net3.5, and code comments. yes we are picky about code even on little things like this. Need this asap, let me know a timline..im hoping for a few hours -- not sure if this helps but i noticed the url on the result page is <[login to view URL]> you seem to be able to just change the domain here and get the key, it would be easier than form posting from the main url above. not sure if there is a limitation from this method but..might be a short cut. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform c#, .net 3.5