Thanks for the reply Seth. I am truly amazed that I still have Pro Audio 9, and every version of Sonar from 8.0 to the current build, installed on both my laptop and desktop. Both Pro Audio 9 and Sonar 8.5 still function on both machines, although I only open them from time to time to see if they still work. I haven't tried X1 to X3 since the Platinum updates began but I'm sure they would still work if needed.
It's a testament to the ruggedness of Cakewalk's builds, and my (not trying to blow my own trumpet) efforts to keep my computers in good condition and up to date.
Anyhow, I have resigned myself to one day having to retire both systems and make the update to 64bit. Like I said though, I'm just not looking forward to it. I do hope though that it will be fairly painless, and I know that I will get all the help I need from both Cakewalk and the forum members here if needed.
Maybe Momentum will be the tipping point.