Well, plenty of fine advice here so far. I guess I could tell you what NOT to do. I took mine with another guy one computer away from me. He sat down and began first. In the 5-10 minutes it took the lady to get my info and my comp fired up and ready to go, he was finished. If you've breezed through the test in 10 minutes...red flag city.
I spent a good 6-7 hours the night before going straight through the Gleim book for like the third time. When I took the test, it took me around 40 minutes. Though most of the answers jumped out at me, I still took my little marker and worked out all of the plotting/performance math. Some might call that "overdoing" it, but worth my time.
Me = 97. Other guy = something in the low 70's. I tend to think it's as easy as you want to make it.
PS--My oral STILL lasted over 4 hours (albeit with generous breaks). It was the most thorough exam I've taken for anything in my life, but I'm thankful for that in that it boosted my intuitive knowledge more than any SAT ever could. My advice: go through Gleim's a couple times, then spend any remaining time you have left HAMMERING away for the oral.