Which front and rear sprocket should I use to get better highway speeds?

[TestMonkey55]

First off, let me say that I am not a gear head. I am not mechanically inclined at all. With that said... Ive seen a couple of people in these forums suggest changing sprockets to get a little bit more top speed.

But its not clear to me what I need to achieve that. From what ive read in other posts, 16T seems to be suggested a lot for better highway speeds. Some suggest 14T for better city/low speeds. But what about the rear sprocket? Does that need any tweaking?

I tried to search the forums but only found stuff that further confused me. Forgive me if there is an obvious sticky that I overlooked!

Thanks!