Send text to current IE window? (auto form fill)

How can I send text to the current IE window?

I have this code, but it's only for webbrowser1, how can I convert it to work with the current IE window?
I want to auto complete a file upload form (see below)

procedure TForm1.Button2Click(Sender: TObject);
var
Doc: IHTMLDocument2;
Elements: IHTMLElementCollection;
Element: IHTMLElement;
InputElement: IHTMLInputElement;
I,j: Integer;
FormItem: Variant;
pch: PChar;
str1: string;
sk:tsendkeys;
IE2: IWebBrowser2;
sh: TShellWindows;
begin
str1:= 'hello';//convert input value to string
pch := PChar(str1);//type cast to pointer

Doc := WebBrowser1.Document as IHTMLDocument2;
//sh := TShellWindows.Create(self);
//IE2 := sh.item as IWEbBrowser2;
//doc:=(webbrowser1.document) as ihtmldocument2;

//sh := TShellWindows.Create(self);
//IE2 := sh.item as IWEbBrowser2;
//doc:=IE2.Document;

Elements := Doc.all;
for I := 0 to Elements.length - 1 do
begin
Element := Elements.item(I, EmptyParam) as IHtmlElement;
if Element.tagName = 'INPUT' then
begin
InputElement := Element as IHTMLInputElement;
if (SameText(InputElement.type_,'file')) and
(SameText(InputElement.Name, 'userfile1[]'))then
begin
FormItem:= InputElement;
FormItem.Focus;
//SendKeys(PCh);// NOTE the false flag
sk.SendKeys(PCh);
end;
end;
end;
end;//SetFilename



the form I am trying to complete is...

<form action="file-upload.php" method="POST" enctype="multipart/form-data">
 Send these files:<br>
 <input name="userfile1[]" type="file"><br>
 <input name="userfile2[]" type="file"><br>
 <input name="" type="text">
 <input type="submit" value="Send files">
</form>

many thnaks

Stu

PS

I've had this responce in VB (from fantasy1001), but I need it in Delphi :(

'This is vb code, very easy
Dim IE As Object
Dim i As Long
Set IE = CreateObject("Internetexplorer.Application")
IE.Visible = True
IE.Navigate ("http://yourip")
Do While Not IE.ReadyState = 4
  DoEvents
Loop
IE.Document.All("userfile1[]").Value = "input text 1"
IE.Document.All("userfile2[]").Value = "input text 2"
IE.Document.All("btnG").Click   'this need the name of the button


see: https://www.experts-exchange.com/Programming/Programming_Languages/Delphi/