How can I make my Solaris files easily available to an Apple Macintosh on a network?

Use CAP, an excellent open source AppleTalk server software for UNIX. The
Columbia AppleTalk Package (CAP) implements the AppleTalk protocol stack
on UNIX The main applications provide an AppleShare 2.1 compatible server
(aufs), a LaserWriter Spooler (lwsrv) and a program to print to
LaserWriters (papif). For more information, see:

http://www.cs.mu.oz.au/appletalk/cap.html