Which browser are you using? The vast majority of the 'regulars' around here use Firefox (or possibly Chrome). Hardly anyone uses Internet Explorer.
As far as I recall (because I've been using Firefox for years), Internet Explorer doesn't allow you to highlight text on an AB page. (Highlighting in a browser, when it works, is done exactly the same way as it is in Word, or similar. i.e. you hold down the left mouse button while dragging across the required text. However, trying to do that in Internet Explorer only results, I think, in either nothing being highlighted, or a vast amount of unwanted text being selected).
If you're not already using Firefox, switch to it now. It's far more flexible, it actually lets you highlight text properly and, if you install the Adblock Plus add-on, you get rid of all the ads on this page, so that it will load several times faster):
http://www.mozilla.com/firefox/
Chris