HP printer set-up. Help me Guys!

[annafan uol com br]

  Hello!

  I just installed the RedHat 6.1 in my computer and I'm trying to
set-up my printer, a HP560C. 
  The problem is when use the printtool. It can't 
autodetect any device attached.
  Even If I configure the program to any port (i.e. /dev/lp[0..2]),
it can't work.
  If I use "print direct to port", I get the following message:
  "Error reason: Couldn't write file /dev/lp0 : no such device" 
  All led's in the panel stay down, ("busy" stay on).

  However under Win98 everything works fine.
  My chip set is Sis620. My motherboard is PC100.

  Please Guys, give some help! :((

  Thank you
	Anna Fanggina