What do I need to do to allow my MMS (picture) messages to download while I am connected to my PC. I thought I enabled DUN, but maybe this isn't the solution. Is this considered tethering?

Thanks, Keri

When you are connected to a PC it uses your PCs Internet connection.. I would assume the MMS server only accepts connections from IPs that are on your providers network, so it probably only works over 1x/EVDO.