Tiling Exterior Porchway

Hi Folks,

Tiling the floor and walls (to dado height) of my outside porchway. It's covered, but still exposed to the elements a fair bit.

Floor: All I want on the floor is faux Victorian grey tiles, about 6 inches square. Any ideas on what adhesive and grout I should use? It will get rained on....something slow setting would be handy, as I haven't tiled before.

It's only a square metre, and most of it wil be under the door mat, but I'll try to make it as even and square as I can. I realise these have to be porcelain tiles, as they're outside. Finally, what sort of grout teeth should I use (height)?

Walls: Do the wall tiles have to be porcelain as well? I just want a glazed brick style, but porcelain seems to be very limited in choice. As I said, it'll be mostly covered, so does it really have to be porcelain on the wall as well? Also, can I use the same adhesive and grout as the floor?

Cheers.

(Also posted in tilers forum)