Xbee max bandwidth

One Simple question....

Can I receive from a Xbee gateway (serial com) a photo (120x90*4bits) gray scale?

this is 43,2kbps. If yes how can I do it?

Because I am just performing some damm test like transmitting dummy data (bytes) and counting the time in mseconds which takes to transmitt and I have like 1,2kbps speed. Propably that test I did was not accurate at all... I just sent a byte array with Serial.Write().

Please let me know what to do, and if this wayis so damn difficult, i should combine ethernet shield if its possible to have full BW.