YouTube Insanity

[#1]

Hi, first post.
Anyways, I'm having problems viewing stuff on YouTube. This is probably an old and boring problem but it's driving me insane. Basically, I get the message about 'not having Javascript enabled and not having the right Flash player'.
However, I do have Jave enabled and I have downloaded the correct version of Flash Player - several times. I've tried uninstalling and re-installing, I've checked all the little boxes in Internet Options that need checking - I've even tried turning off the pop-up blocker and so forth and listing YouTube as a 'trusted site', yet still the same message! I use Windows XP and IE7 and Firefox and this happens on both.
I also have Quicktime installed and enabled but ocassionally I still get the annoying Q sign on many sites.
This is very frustrating. I'm not a tech-head, please help!!!!!

[#2]

You have JAVA installed but the problem is with javascript which is not the same thing. I have come across a few pc's were javascript wasnt working for some strange reason and some programs wont install without it like FLASH.
download the small javascript scripting from MS
http://www.microsoft.com/downloads/details.aspx?familyid=C717D943-7E4B-4622-86EB-95A22B832CAA&displa...
Install it and see if that solves the problem if not then its a firewall security setting stopping it running try this page
http://www.iatn.net/help/javascript/
It shows you how to turn it on in most browsers