i am doing project on LAN TELEPHONY in Red Hat linux

i have files as datbase to store the user name and passeord an all other information. Now i have thin client at my college. so to access /dev/dsp for audio is not possible on server.

So i have written code which run on /base since it has some root previlage on local machine. Now as i have used file for database i m not able to access the file from different /bash since all local machine has it's own /bash .

Is there any way to access file from different /bash so that other user login from one client can read/write data in other /bash file

i.e make entry in masterdb.lst file which contain registerd user list

hope there is way out else i have to change the whole code.
please help me out . i have to submitt this project by end of March.

Nirav
(India)