heres a simple tut teaching the basics of breaking up text
start off with just a blank image. and select the text tool and type some text.
http://img151.echo.cx/img151/8276/step4cd.jpg
once ur text is typed right click on the text layer and select rasterize
http://img151.echo.cx/img151/8040/ownstep9xx.jpg
ok once it is rasterized select the lasso tool... and make some jagged lines like this
http://img179.echo.cx/img179/2648/owned22uo.jpg
now simply select the arrow tool and move the selection where ever you want and you should get some result like this.......
http://img179.echo.cx/img179/5448/ownedsi5pt.jpg
Play around with it more to get some more cool effect.. i hope you enjoyed this simple tutorial..
http://img66.echo.cx/img66/9526/loopy3nq.jpg