I picked up my Air from T-Mo on the EIP and currently have the 500mb/mo plan which I'm pretty sure I'll be upgrading to the 2.5gb soon. Anyway, I know the 200mb of free data can added on top of each tier of data plan (to net 700mb/2.7gb/4.7gb, etc). I also asked about this when ordering on the phone and was told I can add it by logging in. However, I can't find the option ANYWHERE. I also seem to recall reading about how to this on the forums here but can't find the post. Can anyone help me get this added? Thanks!