Bulbs is one things, the entire assembly is another. I've never worked on that year Accord, but I'd assume the above suggestion is correct for replacing a taillight assembly. For the bulbs you just need to remove the inner cover, self-explanatory when you get a look at it.

On some models (can't say for sure this applies to '00 Accords), ones on which people often suggest removing the bumper to replace headlight/front corner lamp bulbs, you actually only need to pull back the front fender-liner, it's even easier and faster than removing the bumper.
If you're replacing the entire headlight assembly, you should be able to figure it out by take a good, close look and determining which bolts need removed, etc.

If it's just the bulbs, the procedure is simple and is listed in the owner's manual.