Honestly, if you're having trouble figuring out the interface with Firefox, I can't help you as I've use it only on my laptop. At home, which is here, I use Mozilla 1.7. A lot of people bash it by calling it bloated and useless... well, I find many uses for it.
The thing I like about the older Mozilla than FF is the options. There are FAR many more options with Mozilla. I still, for the life of me, can't find out how to make the middle mouse open a new window in FF instead of a tab. And I don't personally care for the tabs. I'm too used to clicking the bottom of the window.
A built in IRC client doesn't hurt either :wink:
But ... as for images and such ... code? I don't think so ... you just need to set the properties to "show all images" and not just specific sites. There's no other way to show an image by using HTML other than the IMG tag.
About the side scroll color bar thing, that's an IE only option. One of the many things I was talking about. Soft of a gimmick, if you will. I think the only constructive thing Microsoft has actually given the web development community is iframes.
By the way, in your guide:
It will only block pop-up windows that open without any action by a user
That's not entirely true. I believe it blocks third party popups only. (another web address in a popup command). Because, you can still use popup blocker and make an automatic popup on a page reload command.
Also, "Java" can't do anything unless you agree to download the applet. I believe you can also tell it to ask you.
Dark Tree:
https://addons.mozilla.org/extensions/moreinfo.php?id=1002&application=mozilla
You could also just select all and paste it into notepad. Pretty easy since you could just type:
ctrl U >> ctrl A >> ctrl C >> windows R >> notepad >> ctrl V
That chain of commands is:
View Source >> Select All >> Copy Selection >> Run >> Call Notepad >> Paste Selection
Just for clarification. Take out the blasted mouse whenever you can ... so much faster.
As for the extensions ... Um ... I don't know. If you have the program that's suppose to be called installed and set up properly and you've restarted Firefox, it should work.
If you gave me more information I could try it and actually give you helpful feedback.
Also, just to mention: I wouldn't use interface as a pro or con. It is up to the user's preference, number one, and number two: the appearance, layout, etc of any program can be changed. And there's all sorts of "plug-ins" for IE to make it look identical to FF and all sorts of themes for FF to make it look like IE.
Blame it on Microsoft, God does.