What about Centos4.4 is that similar to FC4/RHEL4? Actually I want to have the version closest to RHEL4.btw, if you're particularly keen to stat at about the RHL 7.3 level then CentOS 2.1 is close, CentOS 3 is close to FC1 (I think) and CentOS 4 is a good match for FC3. Note, "good match" is less than "perfect match." Making it work may require some skill:-)Those are the correct FC versions as a basis for the CentOS releases, yes.