now it's again running on the solaris 10 b19 (i.e. the solaris 11 beta 
considering the uname). So what you have to do is:

1) install the software
2) then create the following links with the "ln -s" command(as root)

these for solaris 10 (in case you are running solaris 10)

lrwxrwxrwx   1 root     root          13 Mar  8  2005 sunpcidrv.2100 -> 
sunpcidrv.290*
lrwxrwxrwx   1 root     root          16 Mar  8  2005 sunpcidrv.2100.64 
-> sunpcidrv.290.64*

and/or these ones for solaris 11:

lrwxrwxrwx   1 root     root          13 Sep 12 22:40 sunpcidrv.2110 -> 
sunpcidrv.290*
lrwxrwxrwx   1 root     root          16 Sep 11 14:27 sunpcidrv.2110.64 
-> sunpcidrv.290.64*

then run as root:

/opt/SUNWspci2/drivers/solaris/sunpcload

then start your sunpci and HAVE FUN!!!!

P.S. below the output of how it should look like ;)

/opt/SUNWspci2/drivers/solaris# ls -al
total 2392
drwxr-xr-x   2 root     bin          512 Sep 12 22:40 ./
drwxr-xr-x   8 root     bin          512 Mar  8  2005 ../
lrwxrwxrwx   1 root     root          20 Mar  8  2005 makemaster -> 
.../../bin/makemaster*
lrwxrwxrwx   1 root     root          13 Mar  8  2005 sunpcidrv.2100 -> 
sunpcidrv.290*
lrwxrwxrwx   1 root     root          16 Mar  8  2005 sunpcidrv.2100.64 
-> sunpcidrv.290.64*
lrwxrwxrwx   1 root     root          13 Sep 12 22:40 sunpcidrv.2110 -> 
sunpcidrv.290*
lrwxrwxrwx   1 root     root          16 Sep 11 14:27 sunpcidrv.2110.64 
-> sunpcidrv.290.64*
-rwxr-xr-x   1 root     bin       114940 Sep 23  2002 sunpcidrv.270*
-rwxr-xr-x   1 root     bin       191248 Sep 23  2002 sunpcidrv.270.64*
-rwxr-xr-x   1 root     bin       154928 Sep 23  2002 sunpcidrv.280*
-rwxr-xr-x   1 root     bin       260272 Sep 23  2002 sunpcidrv.280.64*
-rwxr-xr-x   1 root     bin       156764 Sep 23  2002 sunpcidrv.290*
-rwxr-xr-x   1 root     bin       262112 Sep 23  2002 sunpcidrv.290.64*
-rwxr-xr-x   1 root     bin           78 Oct 17  1998 sunpcidrv.conf*
-rwxr-xr-x   1 root     bin         3174 Jul 31  2002 sunpcload*
/opt/SUNWspci2/drivers/solaris#