I can confirm the workaround in post #7. Installing 7zip indeed allows the iso file to appear in the selection box.
** Changed in: usb-creator (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/527972 Title: [Lucid Alpha 3] usb-creator.exe does not accept ISO selection on Windows XP system -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs