I must start by stressing that this is for educational purposes only!! Ok, now that I got that out of the way.
The purpose of this project is to demostrate how to extract data from a website.
Lets get right to the good stuff.....the code!
The first step is to format the url with all the required information.
<P><FONT color=#0000ff size=2>Function</FONT>
<FONT size=2><P>strAdd = ReplaceSpaceWithPlusSign(txtAddress.Text)</P>
Now that you have the correcly formatted URL pass it to a function to read the websites source code.
Now that you have the source code pass it to another function that uses regular expressions to find the zip code.