Yes, it would have been better to start a new thread.
Simple Text is the app used as default when the MacOS encounters an unknown file.
Usually the reason is that something went very wrong moving your files.
Best start moving again. This time create or download a large hardfile for BII, initialise it in MacOS and copy all your needed files to the transfer volume.
Some large volumes are collected here: http://macintoshgarden.org/apps/disk-images-emulators
This volume may be moved by USB or network to another computer without harm.
Note that some apps e.g. Stuffit have to be installed again as there are dependencies to files in the System folder.
Most apps like Photoshop, Claris Draw, even the System folder may be moved without issues.