http://eggp.ggpsystems.co.uk/eggptest/eggp.asp
(Click on About eGGP)

Can anybody see where the 'phantom' pixels between the W3C CSS and XHTML buttons is coming from? They only seem to show up in IE...

change this

<p style="font-family: Tahoma; font-size: 12px;">
<a href="http://jigsaw.w3.org/css-validator/" target="_blank">
<img style="border:0;width:88px;height:31px" src="http://jigsaw.w3.org/css-validator/images/vcss" alt="Valid CSS!" />
</a>
<img src="../images/spacer.gif" width="31" height="30" alt=" " />
<a href="http://validator.w3.org/check?uri=referer" target="_blank">
<img style="border: 0;" src="http://www.w3.org/Icons/valid-xhtml10" alt="Valid XHTML 1.0!" height="31" width="88" />
</a>
</p>

to

<p style="font-family: Tahoma; font-size: 12px;">
<a href="http://jigsaw.w3.org/css-validator/" target="_blank"><img style="border:0;width:88px;height:31px" src="http://jigsaw.w3.org/css-validator/images/vcss" alt="Valid CSS!" /></a>
<img src="../images/spacer.gif" width="31" height="30" alt=" " />
<a href="http://validator.w3.org/check?uri=referer" target="_blank"><img style="border: 0;" src="http://www.w3.org/Icons/valid-xhtml10" alt="Valid XHTML 1.0!" height="31" width="88" /></a>
</p>

...why does that work?!

lol

it's cause you had a your <img ...> on one line and the </a> on another therefore creating whitespace