You can use html <div> tag and css style for this.
Image1.jpg = background image
Image2.jpg = to be placed on Image1
<div style="width: 400px; height: 80px; background-image: removed(Images/LMTG-LOGO.gif); background-repeat: no-repeat; background-removed: center; text-align: center;">
<img src="Images/ltmhilogo.bmp" alt="Image1" />
</div>
You can adjust location of your Image2 by applying "style" property and "margin" attribute. Adjust height and width of the <div> tag based on the size of your image.
Hope this will help you.