Wait, wait, wait. Java is not needed for Youtube - ever. JavaScript is needed for most functionality. Which is it?
You may be right. My thread title is wrong. The error says "javascript". I'm still on my PC at home but I uninstalled Java from this PC and You Tube still works with IE or FF. But in FF, if I go to 'Tools > Options > Content' and de-select 'Enable Javascript' and selected to 'Enable Java' then I get the same message he gets on his laptop. (Print screen}
When the FF options are set to 'enable java' - but de-selected for 'enable Javascript' I still get the error message.
When the FF options are set to 'de-select for enable Java' but selected for 'Enable Javascript' You Tube videos play fine.
So it's Javascript that FF needs to play videos.
But with IE on my PC I can go to Internet Options > Security and dissable 'Scripting of Java Applets' > restart IE = it still plays videos fine. That's all I see for Java in XP. How do I Dissable Javascvript in IE to test You Tube Vids on my computer (XP) and how to enable javascript in Vista for his laptop?
BTW: I'm still waiting for him to get home so we can do surgury on the real PC patient.