In Linux RH AS 2.1 how can I change display settings?

Type the command redhat-config-xfree86 into an x terminal.

# Configuring X
Linux Hardware Compatibility HOWTO - video cards
The Linux XFree86 HOWTO
Configuring XFree86 for a Non-Specific Linux Distribution
Common X configuring tools:
Debian - dpkg-reconfigure xserver-xfree86
Mandrake - XFdrake
Red Hat Linux 9: Red Hat Linux Reference Guide Chapter 7. The X Window System
Redhat 7.3 down - the setup utility leads to several config tools
Redhat 7.3 up - redhat-config-xfree86
You may have one or more of these tools:
XF86Setup
XFree86 -configure
Xconfigurator
xf86cfg
xf86config
xconf

# Red Hat links
Red Hat Linux Manuals
Get your mp3 support here
Maximum RPM
rpmfind
Easier software management: apt4rpm - Red Carpet
Red Hat 8.0 Tips & Tricks

# Red Hat 7.3 down configuration commands
setup leads to several configuration tools

# Red Hat 7.3 up configuration commands
Configure soundcard:
redhat-config-soundcard
Configure X server:
redhat-config-xfree86
Configure network:
redhat-config-network
Manage software:
redhat-config-packages
Red Hat Linux 8.0 Package Management Tool
Red Hat 9.0 Package Management Tool
Manage users
redhat-config-users

# Handling NTFS
New Technology FileSystem (NTFS) HOWTOs
Linux NTFS project

I am new to this AS 2.1 so don't know how to use these and from where I may execute these?

I am unfamiliar with AS 2.1 as I thought we were talking Redhat. Is AS 2.1 some version of Redhat or Fedora?

If it is Redhat the page Red Hat Linux 9: Red Hat Linux Reference Guide Chapter 7. The X Window System explains it perfectly.

Linux Red Hat Advanced Server 2.1.