How 2 Debug a Linux App w/ NIOSII Cyclone Ev Board

I have an Altera NIOS II Ev Board (EP1C12)

http://www.buyaltera.com/scripts/partsearc...art=544-1137-nd (http://www.buyaltera.com/scripts/partsearch.dll/partdetail?site=altera;lang=en;part=544-1137-nd)

I made my kernel, file system, the application in linux and it works very well.

I'm using uCLinux for NIOS II 5.1 IDE, but in the future I want to debug my Application because for me its necessary to debug.

I made a try, but i fail to debug. I don't know how to launch succesfully the debugger and its crusial for me to debug a future application... in case of programming mistakes...

So, if anyone can give me the step-by-step way to debug my application, i will apreciate.

Thanks for your cooperation, all.