Don't do just flowers. If at all. If you're too shy/timid/whatever to ask in person, send a small arrangement with a card asking her out. That's second to actually asking her in person. Don't send flowers after the date either (assuming you get it) then you will just seem like you're taking it way too fast.
csirca;4780973haha no dude i droped out when i was 16 and i now work at Mcdonalds
You're just full of win, aren't you?
Uhm I also think flowers are a bit too much right off the bat. Tough as it is, the old fashioned way is probably still the way to go.