Xbee communication with Sk-S7G2 kit

hi, i am working on xbee communication with "Sk-S7G2 baord".

now my requirment is i need to read data from (sensor+xbee) to the  Sk-S7G2 baord via UArt.

then i need to send this data from another xbee which is ascoiated with Sk-s7G2 only .now the data will be transmitting to another Dk-S3A7 board which acts like local data station...

now 

1) i din see more than one UART pins in the "Sk-S7G2 baord".

can u guide me how to do that?

its urgent..

2) one small help once if i install E2 studio,where shall i store the tool chain of it and compiler package.is it stored in same direcory of E2 studio???

make it soon