Samples for file browser or FileConnection ?

hi,

I am new to wmMobileDesigner. I hands on all the good samples. however i am in need of File browser samples.
Like browse the device files and folders.

I tried to use JSR 75 javax.microedition.io.file.FileConnection but multibuild got failed.

Is any one developed/hands on file browser app?

Please help

Regards,
vidhya