Several questions

Hi, I just installed PEAR for the first time and have several questions. Don't have too much experience so please forgive the very basic questions: 1) What ist the difference between the php.pear and the php.pear.general newsgroups/lists ? Just thought I ask so I don't make any people angry by asking in the wrong place. 2) How can I include a class that I need in a script ? I mean since they are under c:\php4\pear and my project folder is on e:\project\root . 3) My webhost doesn't support PEAR but he told me that I could upload them mysql.How do I have to change around my project before I upload it from the test server to the production server ? 4) Why are there some classes in the packet manager that give an error message when I try to download them? I am not talking about those that have dependencies . Thank you very much.