The emulator is usually software that emulates (acts like) hardware.

Windows treats the emulator (software) as a physical DVD disk drive. When you mount (or load) a suitable file (such as an ISO file) into the emulator - Windows thinks you have inserted an actual DVD or CD Disc into your (virtual) DVD drive.

The main benefit is convenience and speed (HDDs run a lot faster than DVDs).

google Daemon Tools or alcohol 52%- the first IMHO is best, but..

sort of like a ram disk, if you remember those, only instead of read-write memory it uses the 'image' (iso or any of several other formats from nero, ultraiso, poweriso, etc.) of a CD or DVD to make your system think it has another optical drive with that disc in it.

I'm not sure I understand what you're saying Fred. Could you put it in other words or explain it differently?

It´s a software that emulates a DVD drive. If you make an Image of an CD/DVD you can mount it with this emulator and use it like the original CD.
Nice option for games on a Laptop or if you just want to save your CDs from scratches. But most games don´t play with an emulator installed / active.

I'm hoping to see the answer to your question. I was wondering the same thing. I opted out of installing the emulator because I had no clue what it was. If I need it.....I'd like to re-do my install before the time limit is up.

Not really a problem just a question, but this seemed like the correct forum.

I'm in the middle (close to the start) of the install process and one of the options is

Install StarPort DVD-ROM Emulator

Can someone explain what this is, or would it affect anything else, or is it just a program which I would then need to run to have it do anything?

Thanks.