Drivers for 3COM 3C920 Integrated Fast Ethernet Controller

I am installing Sco Open Server 5.0.5 on a Dell OptiPlex GX110 m/c. This PC has 3COM 3C920 Integrated Fast Ethernet Controller (3C905C ? TX compatible).

I am not able to configure this card as drivers are not available for the same.

Can anyone help me in resolving this problem?