LaserWriter Pro 630 hooked up to Windows PC via ethernet

You will need an Appletalk Printer driver. That printer does not offer LPR/LPD, but these do:

Apple LaserWriter Printers With Built-in LPD:

LaserWriter 8500
LaserWriter 12/640PS
Color LaserWriter 12/660PS
Color LaserWriter 12/600PS
LaserWriter 16/600PS
LaserWriter Pro 810

Since these printers support LPD, you can print from any LPR client (for example, LaserWriter 8.5.1) directly to the printer. In essence, the printer itself is an LPD print server.

Maybe this will help:

24594- Apple LaserWriter Drivers: Windows 98 Compatibility

Maybe this will not help:

Microsoft 305989- The AppleTalk Protocol Is Not Available in Windows XP

There may be related threads in this discussion area that describe how to get the components from a different version of Windows and transplant them into XP.

This thread for example:

http://discussions.apple.com/message.jspa?messageID=3838711#3838711

To install AppleTalk protocol to Windows XP
Required files: (Get them from a system running Windows 2000 Professional or Server)
netatlk.inf, sfmatalk.sys, sfmmon.dll, sfmatmsg.dll, sfmwshat.dll, sfmpsprt.dll (You need to make hidden files visible to find them)
Copy the files to their respective places:
WINDOWS\INF\netatlk.inf
WINDOWS\SYSTEM32\DRIVERS\sfmatalk.sys
WINDOWS\SYSTEM32\sfmatmsg.dll
WINDOWS\SYSTEM32\sfmmon.dll
WINDOWS\SYSTEM32\sfmwshat.dll
WINDOWS\SYSTEM32\SPOOL\PRTPROCS\W32X86\sfmpsprt.dll
After restart the AppleTalk Protocol should now be available under the list of Protocols you can add in Network Connections - Location Area Connections Properties.
This is only good using AppleTalk printers attached to the network. After this is done the printer needs to be attached to the computer directly with a cross over cable or to a router/switch/hub that will pass Appletalk with a normal ethernet cable.
The AT printer will show up, if it's turned on, under Add Printer-Local printer attached to this computer - create a new port - AppleTalk Printing devices. Capturing the port is not required for being able to print.
If you are unable to get access to these Win 2000 files post an email address and I will send them to you.

--written by Stuart Hazeldine

Windows has the printer driver built in, so the problem is how to communicate with it. Win 2000 has AppleTalk built in and Win XP can be changed to include it. Your other option is to get one of the new low cost parallel printer servers which can be used to connect both Mac and Window computers via TCP/IP.

Stuart-

Thanks for pitching in. I almost did not find your previous post (quoted above) listing the Windows routines required and where to put them.

Could you cite a name and model number of one of those "low cost parallel printer servers"? I don't think I would recognize one otherwise, even if it fell on me.

Although I have not used one myself, you can find them at CompUSA and other places. Last week they had one for $9.99 after mail-in rebate (which as now expired but they are part of their sale items at this price every few weeks).

G4 450MHz Mac OS X (10.4.10)