cant delete files

For some reason i cant delete any files on the memory card on my mpc1000. I go to the save page but there is no directory feild or delete button. Am I missing something. Also is it possible to erase all the internal crap programs samples and sequences?
Cheers
Ben

just try hitting open window in the save screen on the sample/prog/seq. In that window (like a folder menu) you will see as an option to delete if you select a file. Basically open window, select a file, and there will be a DELETE FILE eventually...don't forget that open window button...