Don't know where you found Nero 5548, but all neroversions are able to make a perfect cd copy.
Doing so, will depend on your willingness, to take some risc, because scratches and dust on the sourcecd can interrupt the streaming process.
If you didn't before, disable on the fly, and point out a temperary dir with enough space an your HD.
Straight ISO9600 supports only filenames with 8+3 characters, while Joliet will support 128 characters, as you can see by yourself in the settings.
In the case of win98CD it doesn't matter, no long filenames there, but when they are present, they will be shortened, when you select only for ISO 9600.