Well, there was certainly something about XP SP3 that broke PageMaker import into InDesign. And, frankly, I doubt that InDesign CS (3.0) would work on Win7 in any case. In Win7, you may want to look into XP Mode - that's where I do all of my CS2 work these days.
I am pretty sure that you can't get an upgrade price from CS (3.0) to the current version, CS 5.5 (7.5). There may be an upgrade path from PM7. However, while you are probably best served in the long run by upgrading to a contemporary verison of the app, you may not need the new features, and your inability to open these files is most likely being driven by the version of Windows, not by the version of InDesign.
Thank you both for your feedback.
I was going to purchase the update from Adobe, but notice they charge $5.95 for shipping, while Amazon ships for free. Salesperson Vincent tried to convince me that I would not get any support for installation issues, or would have to pay for it, if I purchase from a dealer. Can that possibly be true???
On behalf of Adobe Systems Incorporated, what was told to you by “salesperson Vincent” is absolutely untrue!!
As long as you purchase your Adobe software from an authorized dealer and Amazon itself (not necessary its “associates” who often also sell via Amazon) is an authorized Adobe dealer, you have the same support from Adobe as if you bought if from either Adobe's website or via Adobe's customer support / inside sales organizations.
If you were to have any further identification of who “Vincent” is, we'd appreciate having that information (send to me via e-mail - hover your cursor over my photo to get that address) so that he may be appropriately retrained.
Thank you, Dov. I asumed that must be the case, but he was insistent. I will email what information I have.