Well, on RH 7.3 /etc/xinetd.d/wu-ftp has default to off. What does that mean, not much. You don't say what type of box your trying to ftp into the RH box. Can you ping? Can you telnet?
From a RH 7.3 box to a RH 7.3 box, ping works, telnet works, ftp works without changes to configurations provided those rpms are installed. Test if they are available with rpm -q (name of program). On my RH 7.3 wu-ftp is not installed.
As a quick test on either win or lin get to a command prompt.
type: ftp xxx.xxx.xxx.xxx (xxx = your RH 7.2 network ip)
after a pause you should be prompted with [RH] Name (xxx.xxx.xxx.xxx:root) or
[WIN} UserName (xxx.xxx.xxx.xxx

name)
enter the user name you wish to connect with (must already be created on RH box)
enter the password for the user and you should be in the user directory on the RH box.
If your running windows trying to move files back and forth I would suggest samba which offers drag and drop for windows. If you can afford it, and need to run programs from the windows machine; I suggest JamesRiver as a vendor. Their program is simple to install and run and will give you quick login access to the RH box.