AT&T HTC 8X allow new APNs?

[ranphi]

I did a search but couldn't find an answer to this: I was wondering if the AT&T model of the 8X allows for new APNs to be added to it? I'm thinking about picking up an 8X to give WP8 a try and I'd be using the phone with Straight Talk. I've currently got one of Straight Talk's AT&T-compatible Micro-SIM cards, so I'd need to be able to add in the APN for Straight Talk to the phone. I just wanna be sure they haven't locked down the phone to the point that you can't add APNs.

Anyone know for sure if this can be done?

Thanks!