is there any plugin available for Firefox 3.5 or IE 8 that allows you to read out web pages?
If you switch to Opera, you can get the browser to read out pages to you by installing the voice add-on.
It's an add-on that will read aloud highlighted passages of the page as well as follow your voice commands. But you will still need to touch the keyboard, unless you try the option of without. Either way, your voice will have to be very clear English.
After downloading Opera (or if you have it already installed), you will need to go to:
And check the "Enable voice-controlled browsing" option. It will prompt you to download a library (of about 10MB).
After it's downloaded, you can just right-click on selected text and choose "Speak" from the context menu and it will read out the text to you.
Quick keyboard shortcut
As above, you select text, but tap the letter V to have it read.
On voice commands
Alternatively, you can set the trigger options for when it will listen to your own voice commands on the Key to talk and Talk key mode options of the preferences.
Default method with voice
You can even browse sites using the Voice command using other triggers, but that's the start to have it read pages to you.