ipod touch 8gb RIPP

[Sammy]

ok i got a ipod touch 8gb newest model is what it said on the tag at target i bought and was thinkin it was a 3g this whole tome. but.. i saw that ipod touch 3g could have backgrounds at 4.0 so i upgraded and no background? so i went to apple and typed in my serial and it said it was 2g. but i lost reciept for target is there anyway i can get my money back or is there anything better 2g has than 3g that will convince me to keep it? thanks, Sam