I would suggest a backup drive ... much easier than disks. I'm a bit of an anomaly. I have all my runtimes from Poser 4 on available in P11 ... never know what I might need, but the runtimes are all on a separate drive. There are other compression programs out there, some of which free that I'm sure can open your sit files. Good luck and let us know how this works out for you, in case others have a similar situation.

Boni

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"Be Hero to Yourself" -- Peter Tork