Printing from Solaris 10 to LPR on Windows 2008

I want badly to send plaintext print jobs from Solaris 10 servers to
queues on a Windows 2008 server. The Windows server ignores common
options (like `-o compressed` or `-o cpi=16`), which is a problem for
our unusually wide reports.

   Is there another protocol to use (like Samba/SMB)? Is there a list
someplace of the arguments that Microsoft's LPR *does* support? Do I
actually need to set these up as local Solaris queues which first chop
the job down to 80 characters and then send the output to the Windows
queue?

   Or should I just suck it up and print directly to the printers'
built-in JetDirect interfaces?

   Thank you for any advice, links, or sympathy.

- Will Enestvedt
Providence, RI