Since I cheat get paid to surf companies alot and work against their stupid money making scams, I should know all this stuff. And you're in luck because I do. Let's say you want to make an account generator for ignifuge.com, well here's a code I made (For Educational Purposes!!!).

There's only one problem, The Browser has to be on your form. Anyways, if you're making a program like that, then here's the code.

code:
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'The line below explains the code
'BrowserName.Document.FormName.EditName.Value = "Text"

WebBrowser1.Document.Form.Fname.Value = "Yoda"
WebBrowser1.Document.Form.Lname.Value = "StarWars"