How do I enable the "view 1st unread"?
 

I noticed I'm missing something in my site.. how do I enable this?
Thanks!! :)

You don't 'enable' it. Whoever wrote your SHOWTHREAD page probably didn't put the code in there or did it wrong. Go to edit that template and hit View History > Compare and see how the code differs from the default jelsoft code.

thanks for your help, and excuse me if I did something wrong, I'm new to this, but for what I can see, if I'm looking at the right thing ofcoz, everything should be fine... no color changing..

Update, just to let you know that I also tried this, you were suggesting to another user:

Create a new style with no parent:

* Styles & Templates > Style Manager > Add New Style
* Parent Style: No Parent Style
* Title: Default vBulletin
* Allow User Selection: Yes
* Save

Then browse the site using that totally default vbulletin style - do you still have the same problem?

The problem is still there.. no 1st unread post..

Nothing will be there if there is no unread post. If you have opened that thread, then it marks the thread read and there will be no View First Unread link. So, you need to be testing on a thread that has unread posts. Open that thread and view the source code and see what is in that space. Maybe you have a missing phrase or image.