Assistance needed

I have an iMac that I have been using for quite some time. It is one of those that are all 1 piece and you can carry them in 1 hand. Indigo is the color and it was produced quite a while agio. I am running OSX 10.3 I believe. It has a front loading slot for reading CD's but I cannot burn them.
I just looked it up and it is a slot loading iMac G3...indigo

I am looking for an external dvd burner so I can copy files...music and the like no videos at this time but have absolutely no idea which ones to look for.

Any assistance as to what I should be looking for would be apprreciated.
If you need more info on my computer let me know and I will try to provide it.

Thank you
ironman

Here are the best ones: External DVD Burners Review 2008

It sounds like a 400MHz Indigo and the specs are here:-

Apple iMac G3/400 DV (Slot Loading - Fruit) Specs (iMac - Slot Loading DV/SE - M7493LL/A*) @ EveryMac.com

If so it has firewire 400 and a firewire DVD optical burner will be much faster than USB, particularly the USB1. You should be able to boot from a firewire optical drive also. Four of the drives Keith mentions are firewire.

I know nothing about these external drives...do I need any other software to run them? I am looking at one from LaCie that is able to run on Macs it is model #301285U thru amazon. How does this sound? It states it is compatible with Mac. Firewire..USB I don't understand any of this. Thanks