Quark 4 on Windows
I have not tried QXP 5 on newer Windows but I can relate this:
When I got a laptop w/ XP I had no floppy and could not install my V4 so I copied the installed directory from 98 to regular XP. It worked fine after I dragged a shortcut onto the desktop. I did the same with Vista and it easily outperformed better than the crippleware Vista. I just got a new desktop machine w/ 8 gig RAM and terrabytes of storage. I copied Quark again from an external USB onto my Windows 7 Home and again it works fine and I have already produced ,PDFs for Acrobat 10 from my QXP 4. The only problem so far is the fact it was NOT installed on the Windows 7 and I have yet to create an association in 7. Yes, MS buggered associations that worked in XP and even Vista which was a disaster anyway.
If Quark 4 doesn't work on normal XP, Vista and Windows 7, then why is it working as a portable application for me? I already swallowed the Quark learning curve for my production of 300, 600, 1200 and 2400 resolution PDFs. Be very careful of what the experts KNOW until you've found out otherwise. The net would slim way down if untruths were removed. Note, a friend found multiple .DLLs inside Windows Home that service 64, 32 and 16 bit applications. I suspect QXP 4 is not using anything outside its own installed directory.
W. Michel