Hey girls, help?

there's this girl i like. she's amazing, and i talk to her all the time on myspace. we go to the same school and we hav one cl together. i try really really hard to be nice to her and i really think im getting to her. the problem is, there's this..... banquet i hav to go to with my hockey team. its the end of the year thing, and all my teammates bring girls, and i dont want to be left out. i really wanna ask this girl i like, but im not positive if she'll wanna go. i told her i had a surprise for her (im gunna ask her) but wat are some things i can say that will make her say yes? i really want her to come, but wat are some things that will make her fall for me?