After posting the above I came to find there is now a build of 3.5 available for Solaris. I missed it at first due to it not mentioning Solaris on the main download page, but you are correct if you go to the "other downloads" link, there are builds for Sparc and x86 there. I downloaded 3.5 for Solaris x86 and was able to install PDT from the package manager first attempt. MUCH better. Wish I would have realized there were Solaris builds and not have wasted several hours - but now I know.