I have installed various packages on Fedora successfully, but now i hv installed Red Hat on my machine. Like Fedora's Packages folder, which folder contains the repositories for installation.
Next, where can i get these files libgtkhtml-version.i386.rpm, it is needed for the installation of gui tools for mysql.
Thanking You
in advance

Hopefully by "Red Hat" you mean Redhat Enterprise Linux - preferably a recent version (RHEL5).
Package management is like fedora only with slightly different repos.

something like:

# yum install mysql-server mysql

If you do not have a RHN account (paid support) then you'll probably have to use fedoras EPEL repos and something like CentOS.

Did you know that there is a common misunderstanding about linux "enterprise" editions? In the proprietary world, an enterprise or "pro" edition is usually the one with additional features, advancements etc. This is the opposite way round in the free software world.

The EPEL repos do not contain the packages that are in the base repo. Most packages are going to have dependencies that will require a base repo. If you cannot afford the RHEL subscription, consider switching to Centos. Centos is RHEL with the logos removed. It is built from RHEL source rpms(sans logos, etc). It is binary compatible with RHEL.

You know you're right - this serves me right not checking what I have been told
Still - it is possible that OP means Redhat Linux 9 or earlier <shudder>.