Lilypond 2.5.25 for Windows

[Thomas Scharkowski]

Hello list,

I have just used the intaller for the above package.
Double-clicking on a *.ly file works, also contex-menu.
But I'd like to use jEdit, how can I?
I cannot even use a Dos-box, typinf "lilypond" with or without 
parameters produces nothing, not even an error message.

Using the command from inside jEdit produces errors, e.g.:

ERROR: In procedure primitive-load-path:
ERROR: Unable to find file "ice-9/boot-9.scm" in load path

Der Befehl "convert-ly" ist entweder falsch geschrieben oder
konnte nicht gefunden werden.
Process convert-ly exited with code 1

Thank you,
Thomas