@Si
I've tried using your ETHER_28J60 library, but I get several errors when trying to compile it. I'm not sure how to troubleshoot this. I'm far from an expert in C. Dueminalove with 168, Arduino 18 environment, etherShield library, ETHER_28J60 library, ENC28j60 ethernet module.
C:\Program Files\arduino\arduino-0018\libraries\ETHER_28J60\ETHER_28J60.cpp: In member function 'char* ETHER_28J60::serviceRequest()':
C:\Program Files\arduino\arduino-0018\libraries\ETHER_28J60\ETHER_28J60.cpp:79: error: 'class EtherShield' has no member named 'ES_make_arp_answer_from_request'
C:\Program Files\arduino\arduino-0018\libraries\ETHER_28J60\ETHER_28J60.cpp:108: error: no matching function for call to 'EtherShield::ES_make_tcp_ack_from_any(uint8_t [501])'
C:\Program Files\arduino\arduino-0018\libraries\EtherShield/EtherShield.h:51: note: candidates are: void EtherShield::ES_make_tcp_ack_from_any(uint8_t*, int16_t, uint8_t)
C:\Program Files\arduino\arduino-0018\libraries\ETHER_28J60\ETHER_28J60.cpp: In member function 'void ETHER_28J60::respond()':
C:\Program Files\arduino\arduino-0018\libraries\ETHER_28J60\ETHER_28J60.cpp:158: error: no matching function for call to 'EtherShield::ES_make_tcp_ack_from_any(uint8_t [501])'
C:\Program Files\arduino\arduino-0018\libraries\EtherShield/EtherShield.h:51: note: candidates are: void EtherShield::ES_make_tcp_ack_from_any(uint8_t*, int16_t, uint8_t)