Problems with the menu

HI!
I’m new to wordpress and have just started up my site. I use a theme called Imbalance and have been doing some editing, but now I’m a bit stuck. I’m not at all an expert in CSS and HTML, It’s kind of trial and error…
Anyway, I would like to remove the “Archive” menu completely, since I don’t need it. I don’t want my posts to be shown after date.
I also have a problem with the menu “Publications” wich I originally added myself, but it was supposed to be parented under “About”. I have no idea why it ended up there in the menu, so I deleted that page, but it’s still there!
Last question 🙂 Is there a way to nename the menu links? Like to make “Home” > “Work” or “Categories” > “Filter” for example.