Customizing the menus/panels

Hi! I've discovered that I need a lot less choices in my xwiki instance than what the default xwiki installation offers. Now, the PanelWizard is a good tool for shuffling about the big blocks, but how can I remove "Knowledgebase" and "Photos" from my right hand panel if I still want "blog" to be there? And can I somehow rename the "Blog" title? Also, I'm trying to clean up a bit within the blog menu. By default, all blog entries seem to be thrown into the menu together with choices like "Categories", "Create Blog Post" and "Web Home". This looks a bit messed up after a while, as the menu is sorted alphabetically (and also, spaces are removed from titles). Where do I go in order to organize and configure the blog sub-menu? Sorry for the n00b questions, I'm really trying to pick up on this! best regards :-) Thomas