when you got your strat you should have gotten 2 allen keys.. a fat guy and a skinny guy... that will take down the height on the string saddles..
depending on what you're doing with that guitar you may want to either:
1 - check the Mr.Gearhead page from Fender.. it'll tell you the "recommended" setup for that guitar: IE; string height from pickups.. string gauge etc...
2 - if you're new to this be sure to put about $80 usd away in case you screw up and need a complete setup.
All in all, setting up the guitar is not very hard but it is time consuming if you've never done it before... just be prepared. If it's your only axe and it needs a change.. I'd recommend letting a pro do it.
"The one truly great thing about this life is that noone can sincerely and truly help someone, without helping themselves"
Ralph Waldo Emerson
Ralph Waldo Emerson