need help! how to read data and store them to a variable from any webpage

Question

(1)interface:two Textbox, one Button, one Label. (2)require: Input the webpage to Textbox1 and Input the keyword to Textbox2. Click the button. It can acquire that whether the webpage contain the keyword and return the result. The Label will show us yes or not. (3)The difficulty is how to read data and store them to a variable from any webpage. (4)Language: VB,VB.net,VC,VC.net prefer. if who can settle this problem, please contact me. E-mail address: [email protected] Thank you very much!