You can restore the eorigianl string in the file right after you installed ISPconfig.
Also, is there any reason why your installer is not compatible with RHES 4? I would have thought this would be a more popular distribution for web hosting companies.
As we do not get free versions of the enterpriise versions to test ISPConfig with, we are nota ble to support them. Also, most hosting companys do not use the enterprise linux distributions as they cost extra money and they do not bring any benefits. compyred to e.g. debian linux or centos.