try this:

http://www.sun.com/bigadmin/hcl/hcts/device_detect.html

and

http://www.sun.com/bigadmin/hcl/hcts/install_check.html

The later link takes you to a page(Requires a sunsolve login account) where you can download an iso file, burn it and
boot your system from it. It will then check and report the compatibility of your system for
Solaris 10 on x86.

HTH