1. unfortunately, there is no light for the caps lock so you may need to just start typing in your browser window or something.
2. what kind of file are you trying to open? you'll need to download and install an executable unpacker (winzip, winrar, winace, etc) to decompress those file (although i think vista and win7 both have their own unzipping utility built in).
3. you'll need to find out what your library's SSID is and hop on. the librarian should be able to help you with that.
and from the looks of it, your capslock was on when you were typing your message