A 7600 is not going to have any networking servers running by default. The only FTP/HTTP servers were 3rd party, too.
It has got two serial ports (on mini-DIN socets), marked modem and printer. Both can be connected to PC serial ports (both 9 and 25 pin) with a simple mechanical adaptor.
But even if you got into OpenFirmware via serial, the only thing you would be able to do was boot it into MacOS 8.6 or whatever's on it and there's no way to interact with that over serial line.
Basically, no keyboard and monitor == useless Mac. It will boot up without a keyboard attached, though (no need to Press F1 to Resume), but you can do fuck all with it unless it's been configured first.
I might pay you for the RAM and G3 card, though..