Firstly, create great content that people will want to link to.
Secondly, take a look here [webmasterworld.com...] for some great link building ideas.
piatkow
9:47 am on Oct 19, 2011 (gmt 0)
Identifying "quality" sources for links is as much to do with subject matter expertise as with any particular web expertise. If you don't have a core understanding of the website's topic you will always have problems.