>I've created two test classes for two of my classes from aLetters.vcx When I tried to run tests, I got lots of errors on the first test (perhaps because this class is supposed to be on the form and can not be instantiated on its own).

Sounds likely.

>I also found, that it can not work with relative paths, may be because the current directory is changed somewhere. I have FoxUnit on c drive and my project is also on C with Libs, progs, etc. directories.

I've had no problems with relative paths that I recall. I don't think that FoxUnit changes the existing path statement.

Chris