Update NT setup CD with SP

Hi. I know it should be possible to redo (Slipstream/Overlay) NT setup CD’s with the last SP to avoid the two passes. Anybody can tell me how this can be done SAFELY, for NT 4.0 Server (to SP6 ).

Or better still, how can I get a copy of an NT4 Server install that includes SP6.

The reason for this is that I need to install NT4 BDC server on a Dell 1750 that has onboard Broacom NICs that are only supported by SP6 and the server hasn?t a PCI slot for an old NIC, it has PCI 2 slots. I am in a bit of a bind.

Thank you. Nigel.