Sony Xperia Z and Virgin Mobile

[Harkins1721]

Im hoping this is the place to ask but could I buy the Sony Xperia Z phone from Sony's store and then have it activated through Virgin Mobile. This is my first time ever doing this sort of thing so thats why im asking because I have no idea what im doing.

I just dont feel like spending $70 a month for AT&T. So i wanted to take a cheaper route.

Thanks in advance!