ksh prompt

[Robert Herrage]

I have the following defined in my .profile:

  alias prompt="PS1=\"--> \`pwd\` <--
  hostname> \""
  
This sets my prompt to put my current directory on one line
and my prompt below it on the next line.  I also want to have
an alias (or something) for "cd" so that when I use "cd" to 
change directories, my prompt will update accordingly.  The
problem is that when I alias "cd", ksh doesn't parse for any
imbedded aliases.  Therefore,

  alias cd='cd $*;prompt'