Hi and thanks for your help
In the mean time, I have found some useful modules to handle uploads. I also have found out how to use the open(HANDLE, "> /cgi-bin/test.dat"); statement.

Obviously, the problem I am now facing is that my server runs under NT (alas) and I am having trouble with file paths. Namely:
If I use the following statement: open(HANDLE, "> test.dat"); my new file test.dat is created on the root of the server where my perl script is running. This is not very nice, so I'm trying to put this file in a more usable location. For instance by using open(HANDLE, "> /cgi-bin/my_programm_folder/test.dat");

But it won't work. I have tried with backslashes, slashes, dots, double slashes, drive names, full paths, relative paths, it doesn't work. I come from the UNIX (and previously Apple) world and I don't know Windows paths very well, but what I have tried is supposed to be right!

What am I doing wrong?