Informix/SE

We are running INFORMIX/SE. I have a billing database which has 4gl files in directory /u/ruchi/billing and also the form files. The files are growing and I would like to divide them in several directories. So, I created the following directories and it has following files. I can compile the modules because I changed the path information. So I am in INVENTORY directory and I can compile all modules that are in invetory directory but when I tried to compile the program then it says that /u/ruchi/billing/inventor y/main.4gl not found. But that module is on billing directory. So, I did specify the path to find this module in billing directory. I like to know what am I doing wrong? I am very confused. Following are some details of files structures. /u/ruchi/billing has following files billing.dbs main.4gl ; this module is main and it calls inventory and price. /u/ruchi/billing has following directories and its related files. inventory directory - inv_brws.4gl, inventory.4gl and so on price directory - price.4gl and price_brws.4gl and so on Any help would greatly appreciated. If I need to setup the path then would you please tell me how to handle it. I am using ksh shell. Thanks. Ruchi.