CUPS Printing from Windows via IPP

When I try to print with my HP Business Inkjet 1100D from windows XP via the
network prining option I get the following error log and no print. It is on a
RH 9 box on the USB port and works fine with the cups test page option.

The Laserjet4 prints perfectly and other than the differences in the windows
drivers complexity they seem to work in pretty much the same way.

I get the following in the CUPS error log:

[04/Apr/2004:04:02:09 +0100] Unknown
directive
debug2 on line 148.
I [04/Apr/2004:04:02:09 +0100] Listening to 0:631
I [04/Apr/2004:04:02:09 +0100] Configured for up to 100 clients.
I [04/Apr/2004:04:02:09 +0100] Allowing up to 10 client connections per host.
I [04/Apr/2004:04:02:09 +0100] LoadPPDs: Read "/etc/cups/ppds.dat", 293 PPDs...
I [04/Apr/2004:04:02:09 +0100] LoadPPDs: No new or changed PPDs...
I [04/Apr/2004:04:02:09 +0100] Started backend /usr/lib/cups/backend/parallel
(PID 4635) for job 5.
E [04/Apr/2004:10:29:57 +0100] ProcessIPPRequest: missing printer-uri or
job-uri attribute!
E [04/Apr/2004:10:31:57 +0100] print_job: Unsupported format
'application/octet-stream'!
I [04/Apr/2004:10:31:57 +0100] Hint: Do you have the raw file printing rules
enabled?
I [04/Apr/2004:10:36:33 +0100] Job 6 queued on 'LaserJet4' by 'john'.
I [04/Apr/2004:10:36:33 +0100] Started backend /usr/lib/cups/backend/parallel
(PID 9960) for job 6.
E [04/Apr/2004:14:25:19 +0100] print_job: Unsupported format
'application/octet-stream'!
I [04/Apr/2004:14:25:19 +0100] Hint: Do you have the raw file printing rules
enabled?
E [04/Apr/2004:14:25:23 +0100] print_job: Unsupported format
'application/octet-stream'!
I [04/Apr/2004:14:25:23 +0100] Hint: Do you have the raw file printing rules
enabled?

The windows driver is set to print raw printing and I have no idea what this
log means.

I have only very limited experience with linux and would appreciate any help!

John