Solaris UNIX Case-Insensitive Find File Search

I'd like to match all filename like foo.c, FOO.C, fOO.c, Foo.C and so on using find command under UNIX. How do I do a case-insensitive find search under Sun Solaris / OpenSolaris UNIX systems?

Read answer to: "Solaris UNIX Case-Insensitive Find File Search"