Saying yourself first (me and you) is never correct. It's either "you and I" or "you and me". The correct one (I or me) can be found out easily by taking away "you". Would you say "me am going to the store" or "I am going to the store"? Or "Give the box to I" or "Give the box to me"?
For those who remember what nouns, verbs, and objects are, "I" is the noun doing the verb ("I [noun] am giving [verb] to..."). "Me" is an object of the verb, ("You [noun] are giving [verb] the present to me [object]").
By the way, "myself" is ONLY used as an object - "You and myself are giving..." is NEVER correct, but "I am giving a present to myself" is (only I can give to myself [Joe gives to me] or you can give to yourself [Joe gives to you]). If you can't remember, just don't say "myself" unless you are receiving something you yourself are giving. And put yourself last. It's more polite.
