Hi,
do you now, that the old init.d stuff was changed to services ? Check manpages of svcs and svcadm to start, stop and check services.
The package SUNWpsr is still installed by sol10 (check with pkginfo), and deal's with printing. So when it is installed, there are services dealing with printing:
# svcs -a | grep print
disabledFeb_04svc:/application/print/server:default
online Feb_04svc:/application/print/cleanup:default
offlineFeb_04svc:/application/print/ipp-listener:default
offlineFeb_04svc:/application/print/rfc1179:default
Printing should work.
Holger