you can use "lofiadm". have a look here:
Mount an ISO image on a Solaris filesystem with lofiadm - Tech-Recipes.com

Thanks DukeNuke2 for your reply.
I mounted an ISO image of my Solaris.ISO, it works perfectly with : "mount -F hsfs -o ro `lofiadm -a /export/temp/software.iso` /mnt".
But the problem is always the same : when I'm into "/mnt/Solaris_10/Product/" directory I do : "pkgadd -d SUNWman"
but I get :
"pkgadd: ERROR: no packages were found in </mnt/Solaris_10/Product/SUNWman>"

For more informations, into my "/mnt/Solaris_10/Product/SUNWman" directory I have 3 folders : "archive"; "install"; "reloc"
In "archive" there is just "none.bz"
In "install" there are 3 files "copyright", "depends" and "i.none"
and in "reloc" there is an other folder "share" and into "share" there is "man" and into "man" there is all the man files (man1, man2 etc...)

Any ideas?

just for testing... do a:

in the dir with the packages.

Ok!! Here we go!

I did "pkgadd -d product" in the "/mnt/Solaris_10/" directory and it works good!
Thank you DukeNuke2!

Help me please!
I practised removing man page. Then I installed SUNWman package in Solaris 10 DVD and get this error:

## Installing part 1 of 1.
cpio: Can't read input: end of file encountered prior to expected end of archive.

1 errors
Unarchiving of /cdrom/sol_10_508_x86/Solaris_10/Product/SUNWman/archive/none failed with error 1
pkgadd: ERROR: class action script did not complete successfully

Installation of <SUNWman> failed.

I don't know how to fix that error.
Please help me, I'm beginner.
Many thanks!

My God, I have bad installed p7zip and it's the original problem.
I applied 7z patch from Sun and successfully installing SUNWman.
I'm very sorry for my bad post above.