Instruction: Answer the given question using the supporting document.

Input:
Question: I have a Nikon D90 and an SB700 flash.  What would I need to trigger the shutter and flash wirelessly,  How do you trigger the PWs?
Document: If you don't need the complicated multi-tasking of the PW Plus III, this is the radio trigger for you. I have four Plus IIIs and three Plus X triggers and find myself using the Plus X all of the time. They (both versions) can't be beat for off-camera flash, but the Plus X is VERY easy to use and just as relilable. Plus, it is $50 cheaper!
I have an AlienBees B800 which I use for hobby stuff, and needed a good remote flash trigger. Picked up a pair of these, and they work great. Always flashes, every time. No more misfires!They're a bit expensive compared to the cable I was using, but much easier to shoot in different positions, and no need to throw cables all over the place. Use them with some Eneloops and they're free to run!
Overpriced? definitely! But if people pay you for your work the extra investment is worth avoiding the headache.If you do buy the Plux X unit then I would recommend using it on the off-camera unit and using the Plus II on the camera.I hope this helps.
I found these to be much more simple and reliable than my Pocket Wizard tt1/tt5 system. They fired without fail and that is all I need them to do!
This was a first - I couldn't get a piece of Camera equipment to work! I have never had any trouble in the past. They simply didn't trigger and I could never figure out why. I trouble shot for weeks, on the phone with support, with Canon, on forums, updating firmware, etc. Nothing worked. I returned, bought a cheep no-name-brand and they are great. Don't buy.
They work great, the carrying case is a nice addition. Simple operation, good construction. If you use manual flash these are a great choice
These are so much cheaper than the old ones, have 10 channels, and are simple to use. I needed more than 4 channels as we have 4 + photographers and sometimes multiple sets. I did not need the complicated 32 channel kits with the LCD screen and all the bells +whistles. They seem more rugged than the old 4 channel units, too.
The two PocketWizard PlusX are the brand new for sure, and functional. That includes all OEM cables and items, aSavings would like to sale two PlusX and bundle with the PocketWizard G-Wiz Carrying Bag to recruit  buyer. But they shipped only two PocketWizard PlusX. I called aSavings customer service they said there is another package will come but they didn't send any notice or email. I wrote to aSavings, they quickly refund missed the carrying bag.
Bought the PocketWizard's so I could control my new light wirelessly. Very simple and easy to use. Put batteries in them, connect one to your camera, one to your light, set them on the same channel, turn them on and shoot! Didn't have to change any settings on my D5100 camera. Also makes you look a little bit better to your clients since you aren't tethered to your lights by a cable.
This is one of those products that doesn't need much said about it. Put in the batteries, hook it up, turn it on, and it works. Make sure you set both devices to the same channel. Simple and reliable.
Answer: One PW will be on your camera's hotshoe - the other attached to your flash.  Your flash needs to be able to accept a 1/8" input OR X (sync port) input OR put a hotshoe adapter on your flash that has one of those connection ports.