I recently start using a new LaTeX IDE called TeXMaker. It displays LaTeX source code and PDF output side-by-side, allowing you to jump instantly between them, via synctex.
Here is a video someone made to show you how it works. http://www.youtube.com/watch?v=JfRdyUIkqls
You simply go to Options -> Configure Texmaker -> Commands. Then add
--synctex=1into the PDFLaTeX command options. Click OK. Now right (secondary) click on either your LaTeX source or PDF output and select "Jump to blah blah". Check the result!
You need TeXMaker 2.2 or later to do so. On Ubuntu Linux 10.10, the TeXMaker version is 2.0. So u need to download later versions from TeXMaker download page. The latest version is 3.0.