subroutine in seperate file, question

[Rajeev Prasad]

i want to keep a peice of code which uses CGI and DBIx module in a seperate 
file, and want to include it in all my scripts as follows:
 
require "/path/to/script/file";
 
I am not sure if the calling program is also using same modules CGI and DBIx 
what kind of unknown errors i might get? anyone know?
 
ty.
Rajeev