Help if you can, please. Sprint Troubles!

[hanjamin300]

So i would really like to get an HTC Touch Pro 2. If i'm gonna get an upgrade thats what it'll be. My mom doesn't want to upgrade to the everything data plan, though, and the sprint guys at the store said that the phone won't work without it. As in, even if i tried to activate it online, it wouldn't

Is there anything i could do to by pass needing data? Any hack or using a custom rom?

Please HELP!!!