VB on NT <> C on Unix

Got an application in VB running on a NT4 client; on the Unix server there's a C (or eventually a script calling a PL/SQL remote procedure, but let's say it's a PRO C executable) executable which have to read from input some params and delete data from the db, files on the filesystem and so on. The problem is: the 2 apps need to communicate: the VB app has to send the params to the C app, the C app at the end has to send the Vb app some usefull infos. How can i do that?
If u can help me, pls contact me via email (giostoto@tin.it).
Thnx

[Crazy D @ Work]

One way is to use textfiles using a defined format, putting the textfiles in a specified directory. At least that's the way how our VB app communicates with a basic-program on an AS-400.

Crazy D @ Work :-)