Is the new suspension already assembled? Or is the spring and shock separate right now?

Because if it's already assembled, it'll be pretty easy. you basically loosen the lugs, get the car up on stands, then remove the wheels, then basically just undo everything you need to to get the spring/shock assembly off the car, and replace it with the new setup.

If it's all unassembled, you'll probably need some of the stock parts, so you'll have to use a spring compressor to take the stock assembly apart, and the put the new assembly together, then put them in the car.

Maybe someone with a 5th gen accord can give you the specifics.

And use a torque wrench to get the right specs.