I am currently building an application that requires .exe files to be 
executed behind the scenes on the server at certain times.

The .exe files add usernames and passwords to a FoxPro database, which I 
would obviously prefer to do using ADO.NET however the .exe files encrypt 
the password using a key which I don't have access to. The purpose of 
this is that I am integrating this system with an existing package that 
can only authenticate users using encrypted passwords. The files that I 
have access to and need to use are executed in the following way from a 
DOS command prompt:

C:\>adduser <username> <password>

C:\>deluser <username>

C:\>chpass <username> <password> <new password>

As you can see, the usernames and passwords will need to be added to the 
execution string dynamically.

I can't find information on this anywhere, I have searched MSDN with a 
fine tooth comb and found nothing.

You guys are my last hope!!!

Thanks in advance,

AB