Hi guys, i have a quick question about access to my html via the dom?

So first I have an aspx page called MyTestPage.aspx that look like this:

Code:
<%@ Page Language="vb" AutoEventWireup="false" Codebehind="MyTestPage.aspx.vb" Inherits="MyProject.MyTestPage"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
  <head>
    <title>Test2</title>
    <meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.1">
    <meta name="CODE_LANGUAGE" content="Visual Basic .NET 7.1">
    <meta name=vs_defaultClientScript content="JavaScript">
    <meta name=vs_targetSchema content="http://schemas.microsoft.com/intellisense/ie5">
  </head>
  <body>

    <p id=MyP>HELLO</p>

  </body>
</html>
Now i wanna go into MyTestPage.aspx.vb and programmatically change the word "HELLO" to "GOODBYE" on the load up event of the page.

Any help would be greatly appreciated.