Can I add keywords to the array in vb.php (I already added one, but is it alright to add them and is there a limit)?
Yes, you can add keywords to any language file, there's no limit. If you want, you can share your vb.php file so that it can be put in the next release.
Can I change the font-family to "Courier New, Courier, monospace" and where would I do that?
Yes, you can change the font-family too. In the plugin file on line 737 starts the function that outputs the styles for the code boxes. You can put your own styles in there.
tell me why the code is in a scrollable text box?.......It doesn't show that way in the preview when I'm editing the post, just on the site.
The scrollbars are there by default so that long lines in your code are not wrapped in multiple lines & confuse readers. You can disable them by commenting line #742. Also it doesn't show in the preview as the head action which outputs the styles applies only to posts & not in admin section.
Oh!! I see you already configured the scrollbars in code boxes. :)
the plugin works in 1.3 but the page wont be valid xhtml anymore
i checked and it adds "p" tags around the 2 closing divs?
Well that's strange!! The plugin works OK in v1.2 & v1.2.1 without any of those tags. That's a v1.3 bug, you should report it.
Anyway another bug came to my notice as of that. So guys, an update is available, please download the fixed plugin file, no need to download the whole package again if you already have v2Final.