You can address each pin on the pic by offsetting from Porta.0, the syntax is PortA.0(index). Index 0-7 accesses PortA0-7, index 8-15 accesses PortB0-7, index 16-23 accesses PortC0-7 and so on.
Code:
'      address   0  1  2  3  4  5  6 .....  
'               a0 a1 a5 b0 b1 b5 b7 .....
Lookup address,[00,01,05,08,09,13,15 .....],SerPin
SerOut2 PortA.0(SerPin),baud,["output string",10,13]