Reinstalled as New User?

Question

I don't know if actually have a problem or if I'm just confused. I've been running Leopard for a few weeks, and I believe my user name was my name, all lower case and without spaces I believe (e.g. myname, not My Name). So, for example, my websites were stored in users/myname/Sites.
After reinstalling Leopard, I now have two points of confusion. First, if I click the Apple icon in the top left corner of my screen, at the bottom it says "Log Out MY NAME." I'm not certain if it used to be "Log Out my name" (lower case) or not. The important thing is DOES IT MATTER?
Also, when I click on Macintosh HD > Users, I see just two icons - a folder named Shared and an icon (looks like a house) named "webmaster." I don't recall if I originally had an icon named webmaster or not. When I reinstalled Leopard, I decided to try a free .Mac membership; perhaps the icon relates to that.
What confuses me is the absence of my older user name. I used to be able to follow this path:
Users/myname/Sites
Again, it may not matter. But I have tons of backed up files that I want to copy back to my Mac. Many of them were originally inside the folder Users > myname.
So I guess I have two or three questions. First, what's going on? Isn't Leopard supposed to automatically create a folder with my user/login name inside the Macintosh HD > Users folder?
Second, how can I create such a folder?
Third, if I give the folder its original name - myname - might that create conflicts with my current, upper case user name. I'm just speculating that some of the software programs, services, files, etc. that I copy back over might be somehow configured for "myname," rather than "MYNAME."
For example, I'm using MAMP Pro, in which I set up a series of virtual hosts mapped to Users/myname/Sites/MySite.
Like I say, I'm confused, and this might not be a problem at all. Thanks.

Answer 1

If I can throw in a second question...I cloned my hard drive a couple weeks ago. Accordingly, I can access my external hard drive with Finder, copy the entire folder Users/myname and paste it into the Users folder on my internal hard drive. Would that be a smart thing to do?
The reason I reinstalled Leopard in the first place is that it started acting up, booting into Setup Assistant, for example. I suspect the problem might be somehow related to a few software programs and/or Opera widgets I installed over the last couple days. That's why I'm installing most of my software from scratch.
But the Users/myname folder isn't likely to contain corrupt files that could cause serious problems is it? And if problems did arise after I pasted it in, wouldn't I be able to fix them by simply deleting the entire folder?
Again, the other problem I face is matching the name of the folder - Users/myname - with my new account name - MY NAME (I think!).