CSS : Attribute selector

Am i being dof!?

I am working through CSS Lesson 2 and trying to apply the attribute selectors to the illuminati pages as specified in activity 2.5... it doesn't want to work As far as I can see my code is right ... see bold section at bottom of css code...
<!--
h1, h2 {color : teal;
background-color : #99CCB3;
letter-spacing : 5px;
text-transform : capitalize;
font-size: 1.4em;
font-variant: small-caps;}
h1 {font-weight: 900;}
h2 {font-weight: 400;}
address {color : #FFF;
background-color : #699;
text-align : center;
word-spacing : 5px;
font-weight: 600;
font-style: normal;}
p {color : navy;
background-color : transparent;
text-align : justify;
text-indent : 15px;
line-height : 1.4;}
td {line-height :1.5;}
a {color : #006;
letter-spacing : 2px;
text-transform : lowercase;
text-decoration : none;}
body{font-family: Arial, Helvitica, san-serif;
font-size: .9em;}
div table {background-color : #99CCB3;}
p a {letter-spacing : normal;}
table[align] {font-family : Georgia, serif;}
td[height="25"] {background-color : #EEE;}-->

but it wont pick up the style... if I don't use the attributes in the square brackets, but find another way to specify the spot I want the style used on, it works fine...

What am I doing wrong .... PLEASE HELP ME...

ok I will look at it over the weekend but maybe try to cheat (i.e first check if their solution html works and if it does then compare what is different between yours and theirs) by doing what I suggested at the end of this thread:
http://osprey.unisa.ac.za/phorum/read.php?193,49729

ok I have just checked the solution file in here:
C:\CSS\The Cascade\solution files\Illuminati\info.html
and
C:\CSS\The Cascade\solution files\Illuminati\styles.css
this has:

table[align] { font-family: georgia, serif; }

td[height="25"] { background-color: #eee; }

which works in firefox but not in ie7 - so it seems as if internet explorer does not follow the css standards.

Thanks...