I've done this with the two MBP's we have at our house. It was very simple (around 8 screws). Just make sure you have a tiny screwdriver set (like those used for glasses). You can usually search for macbook screwdriver and find ones that work for <$10

> I've never seen an SSD drive, I'm wondering if the conector is the same as Serial ATA?

Yes, modern off-the-shelf SSDs in a normal package use SATA (what else would they use?).

They look exactly like your standard 2.5" drive, except without breathing holes and sometimes thinner with a spacer to reach normal 2.5" height.

To see what SSDs look like, just click around in Anandtech's storage articles category[0], just ignore PCI-E SSDs (they're a bit of a special case)

[0] http://www.anandtech.com/tag/storage

Yes, many SSD's use SATA.