http://www.nikerunning.com
A few articles there.
Try carb loading the days before, start hydrating DAYS before. Drink water. A lot. Especially since it is so hot out now. Since it is the day before, heres what to doL Drink water today and tommorrow. A lot. Also, have a big 'ol spaghetti dinner. Although any pasta will do. No caffeine either. (Caffeine saps energy from you. So quit drinking pop and limit the coffee ).
On the mile:
Run it as hard as you can. No bull<spit>. If you collapse at the end because you ran with every ounce of energy, great!!! That is victory. Don't go easy. Go all out. Since it will be on a track(most likely), stay in lane 1. Don't run on the line, or out of it. Watch your footing. WEAR LIGHT SHOES. Really light. As in distance spike light. No 15, 16 oz. cross-trainers or so. DO NOT wear football cleats on the track for anything(I've seen it all...).
Go for even splits. For instance:
67, 68, 66, 62. Type of thing. The last lap is almost always faster due to finishing kick. Although that would be a 4:27 mile(those ex. splits). That is faster than you probably will ever be able to run it in. If you could though, you'd be in the wrong sport. Cross country and track would be your sports.
Keep your arms moving straight. Don't put your hands in a fist. Run on your toes, although today's garbage shoes literally prevent it, what with all that heel lift crap. Toe running is an art that takes time to master though. Upper body strength is important in running. Abs, arms, chest etc. Work on your breathing, and your form. Bad breathing and form creates cramps. They are an evil that could be prevented.
Remember, "To give anything less than your best is to sacrifice the gift." ~Steve Prefontaine.
"I've always said that Pixar is the most technically advanced creative company; Apple is the most creatively advanced technical company"
-Apple CEO, Steve Jobs
http://www.fortune.com/fortune/technology/articles/0,15114,1025098,00.html - Apple CEO
http://www.pcmag.com/article2/0,1759,1572017,00.asp - Adobe CEO