1. you need to host the images somewhere
2. build an webpage on MS FrontPage
3. copy and paste HTML code generated by FrontPage into eBay.
or ...
<br>
<img src=(image url here)>
<br>
<img src=(image url here)>
<br>
<img src=(image url here)>
<br>
<img src=(image url here)>
<br>
should get the job done.