Nice clean website. I'm new at this myself so I find it a little difficult to be critical as I know how much of a challenge getting a site right can be. My only critique would be that you might want to add a bit more definition to the user log in form as it does blend in with the background and as such looks a little homemade. Over all I like it. tested with Mozilla 3.0.11
the problem occurs when i use IE 6 to look at your page. I tried FF its ok but you should consider making your site proper for as many browsers as possible