Well, no. It won't.
<img border="0" src="C:\Documents and Settings\nawab.a\Desktop\header.gif" alt="Pulpit rock" width="904" height="128">
Specifies an absolute file address - which is not available, since the file is on the server, and it's hard drive is no more accessible to the client than the client's hard drive is to the server - and for the same reasons.
Move the image to a folder under your website and display it from there:
<img border="0" src="images/header.gif" alt="Pulpit rock" width="904" height="128">