I totally get that. I have days (weeks...months) like that. 
I think most of these are not actually about scorm...but who's checking? (this might be when Dan says, I am...)
1. Can I change my text in the eLearning, things such as the registration text, courses we would like to name eLearnings etc.
The short answer is yes. But I think you are looking for something more specific, like, how? and I'm not sure where you want that text to be changed. In Moodle (Whole site or Course)? In Captivate (as a whole course thing, like a preference, or throughout)? Maybe give an example of what you have and what you want.
2. I now have a header image but when I click on a course that page has no
header image anymore. How can I make sure it shows everywhere?
Where is your header? Do you mean a Moodle site brand that doesn't show up when the scorm opens in a new window (you might think you want that...but it can be bad...maybe put the brand on your captivate)? Or do you mean in Captivate? Is the header part of a Master slide? Sometimes text on masters doesn't display right. Is it part of your preferences?
3.Login as a quest should not be visible. How can I hide this?
? Login as guest? I'm hoping. Go to Site Administration-> Plugins->Authentication scroll down, change guest login button to Hide. I think this should take care of your problem.
4. Students can now see a list of other students and I don't want them to
see this. I went through all the settings and delete students form
permissions but I still see the participants list.
This might be a couple of questions. Are you talking about the logged in users block? If you remove student permission to see logged in participants, they can't see it. You can see it because, as far as Moodle is concerned, you are God...not a student. You can see anything. Switch to student role or login to a student account (I have at least one 'test' student for just this purpose) to see how it displays or doesn't. Depending on the activities or options available, you might not be able to completely block students from seeing other students (like forums). Or if it is the block you're talking about, you could always disable the block entirely (hide it in the Site Administration->Plugins->Blocks area. I'd resist the urge to uninstall, just hide it).
5. When someone
enters the site and is not logged in, you only see courses in the left
hand menu. This is perfect but on the right of it we would love to show
some text to explain what this portal is for and what people can do
here. Is it possible to have text here?
Nearly anything is possible. Just go to the front page (site home) and Edit Settings. You can put anything you want in the front page. It's a course, after all.
6. A user can enter the course
in preview mode. We don't want that as the user can already practice.
Can you disable preview mode?
I'm guessing this is Captivate/scorm you are talking about here. Yes. Go to the scorm activity settings. Open the Appearance area. Click Show more (always click show more!). Change disable preview mode to yes. Because, yes, you want it disabled. I hate preview mode. Better: Go to Site Admin->Plugins->SCORM package and set it to yes as a default. I just did this and I'm super excited about it.
7. A student still sees events in the
top menu bar. But they can also create events. I also changed all the
permissions but still they can make events. So the client said that it
is okay if the Admin places events here and students can see it. So I
placed a event as admin but it didn't appear in the student events list.
Any idea what I might be doing wrong?
I'm not sure entirely what you're asking. If they add events, do they add them as user, course, category or site? I'm not sure if you can modify. Training them to add their events only for user? I've never had a problem with this...not sure how it works. You might post a question in a non-scorm area where not scorm people who use the calendar/upcoming events blocks can give you better info.
8. Recent changes is visible for students and we want to hide it. Also this I can not find
Recent activity? I just delete that block. Then no one sees it. But if you want to keep it, go to the block settings, choose Permissions. Remove the student role from the view permissions. (You could do this for the logged in users block, too).
9. In the user profile you have things such as User Picture, Additional
names, Interests and Optional. Can we remove these from the profile?
Is it possible? Yes. Is it a good idea? NO. Customizing these would possibly interfere with upgrades later. The less you hack core, the better off you are. You might be able to hide them. Site Administration->Users->User Policies has an area that discusses hiding profile fields. I've never done it...so I'm not sure how it works or who exactly they are hidden from (only users? everyone? no idea).
10. In the user profile section you have a box "Miscellaneous" it shows blog entries etc. Can we remove this?
It only shows blog entries if blogs are enabled. You can shut off blogs at the site level, if you want (maybe in the advanced features area?). I'm sure you can modify profile sections but I couldn't tell you how.
11. Also the site pages keep showing up in locations. Can we make sure that these are removed everywhere?
I'm not really following. Are you talking about a block? If you have a block on the site page that you only want on the site page, turn editing on and go to edit settings and choose the Configure option. Change page contexts to display on front page only. If you mean something else, please clarify.
Geez, this is long! Hope it is helpful.
