I've seen a few people writing guides for playing the various classes after the 4.0 changes, since most WoW players lack the ability to read tooltips and need other people to tell them how to play. So here's my 4.0 guide to Enhancement Shaman.
Step one: Glyph your Lightning Shield
Step two: Swap out Magma totem for Searing totem.
Step three: Congratulations, you are now a ret paladin. If you are still reading this, your face is not on the keyboard and you are losing DPS.