I need to reinstall InTend, but can't find the disk or it doesn't work.

This zipped file has all the InTend files. Unzip into a folder, and run InTend.exe. It ought to work. It does not require a serial number.

This set of files includes our default sample data base. Be sure you keep your own database files separate, and then copy them in. You want your data, accumulated perhaps over a long period of time, not our sample data.

Note that InTend is a DOS program that hasn't been enhanced in many years. We can provide only very limited help in getting it working or troubleshooting problems. But it works fine under WIndows, even Vista (and presumably Windows 7).