To link to a larger version there are lots of css hover popups methods that show a line of thumbnails which popup in a different place. See
http://www.wickham43.net/hoverpopups.php
If you have different size images and want them all to be the same size in a row, use resizing like:-
<img style="width: 247px;" src="image.jpg" alt="Image description"> which will resize the width and the height in proportion (so the top or bottom may not line up with the others).
Code downloaded to my PC will be deleted in due course.
WIN7; IE9, Firefox, Opera, Chrome and Safari for Windows; screen resolution usually 1366*768.
Also IE6 on W98 with 800*600 and IE8 on Vista 1440*900.