Three important points:
1) TP5 requires read/write access to its program folder. On Windows 7 (actually, Vista and up) programs cannot write to anything in Program Files. So, install TP5 in a folder of its own, for instance C:\TP5, D:\OLDPROGS\THUMBS5 or whatever you prefer but not in Program Files.
2) The location of the database (.td4 - don't change its extension) doesn't matter. I'd just keep it in the same folder as ThumbsPlus itself, e.g. C:\TP5. Through Options | Preferences | Startup you can tell TP5 to load that database everytime it launches.
3) Now for the source of your problem: ThumbsPlus needs to match its database records (that hold the thumbnail image, filename, keywords and other information) to the corresponding image files. In a regular configuration like yours with local (non-networked) drives, it does so by the location of the files, defined as:
Drive Volume Label | Folder(s) | Filename
So, when you copy your old database and your images to the new computer, you must make sure that the images find themselves in the same location as they did on the old computer. The volume label of their drive must be the same (but the drive letter doesn't matter) and their folder structure and filenames must remain unchanged.
You write that you had your images in "
C:\program files\paint shop pro\images" on the old computer. You did not mention the volume label of that drive. On the new computer, you have those images in "
C:\program files86\paint shop pro\images".
So, what you can do on the new computer is the following:
[*]Exit ThumbsPlus if it is running.
[*]Launch Explorer (My Computer) and give the C: drive the exact same volume label that the C: drive in the old computer had.
[*]Still using Explorer, create a folder named "
C:\program files\paint shop pro\images" just like you used to have on the old computer.
[*]Still using Explorer, move your images from
C:\program files86\paint shop pro\images to
C:\program files\paint shop pro\images.
[*]Now launch TP (and make sure it's using the database that you copied from the old PC) and verify that TP is now recognizing your images again and that the galleries, keywords, et cetera are intact.
[*]If that works as expected, you can now use TP to move the images back to their previous location (
C:\program files86\paint shop pro\images) or to any other destination that you prefer. You can also use TP to change the volume label of drive C: if you wish. The important thing is that you use TP to make these changes, so that it can update the thumbnail records in its database and won't lose track of the images again.[/list]
I hope this helps.