give your div an id and use padding.
HTML:
PHP Code: 
<div id="social"
<
a href="#"><img src="http://givingcancerthefinger.com/wp-content/plugins/social-sharing-toolkit/images/icons_medium/twitter.png" alt="picture of a pumpkin" /></a
<
a href="#"><img src="http://givingcancerthefinger.com/wp-content/plugins/social-sharing-toolkit/images/icons_medium/facebook.png" alt="picture of a pumpkin" /></a
</
div
CSS:
PHP Code: 
#social img { padding: 0 4px;}