I'm sorry, but you can't increase the Surface Pro's RAM. The chips are soldered directly to the motherboard. Check out step 14 of the Surface Pro teardown in order to see for yourself :)

John is right — the SSD is replaceable, but opening the Surface Pro is terrible.

Here is a shot of the actual SSD found in the Surface Pro:

From the teardown: "The Micron RealSSD C400 packs 64 GB of storage capacity. It can read 500MB/s and write 95 MB/s — all in a tiny 1.8" form factor."