Dreamweaver
To start things off, your URL is extremely user un-friendly. Having .'s then -'s makes it hard for anyone to remember and web users generally have a very low threshold for annoyance. Remember the simple acronym. K.I.S.S. Keep It Simple Stupid. This applies to everything.
Next, the background being a gradient is not a terrible thing, however to keep it from creating artifacts and melting out peoples' eyes, keep the two gradient colors closer together. So instead of light gray and black (#ACACAC and #000000) do something like a black and a dark gray (#000000 and #1f1f1f) for example. This will keep those nasty artifact lines from showing up and it keeps your background visually dynamic. Just because it isn't immediately recognizable as a gradient doesn't make it a bad thing. Subtlety is the key.
Dreamweaver: You said you used Dreamweaver and didn't like it? I personally swear by it because it has so many useful functions like code hinting and visual layout (ie where you can place items visually rather than hand-code everything). This can be a bit buggy for cross browser testing, but when you are just starting out, it can be a big help to see the layout then check the code.
You use IE7 for web design? Shame on you doubly. Go get
FireFox 3 right now and download the
Firebug add-on, you will never look back. Seriously. There is no better resource for learning and honing your CSS skills than Firebug.
Content is king. Proofread and proofread again. No one will take you seriously unless you can avoid grammatical errors. I realize that at your age you do not really care (as I didn't when I was designing at your age) but this a very good habit to get into early.
The next thing you can do is learn. Making a web site is a learning experience every time and building on knowledge just makes your sites stronger. Tutorials are a great way to learn new things within web design or design in general (the two are not
mutually exclusive mind you). A great place to start is
NetTuts.com . This site goes step by step through various examples and is quite in depth as well.
Some other sites in this network are:
http://psdtuts.com/
http://vectortuts.com/
http://audiotuts.com/
All these sites are in the
Envato network, which is a great place for inspiration and education.
Sorry this post has been a complete wall of text, but I just wanted to lay my 2 cents down. Thanks!
My website is in the midst of a redesign currently, but you can visit my old, old flash site
HERE.