Modify 
<RepConnector_home_dir>\bin\repra_env.bat
                    (Windows) or 
<RepConnector_home_dir>/bin/repra_env.sh
                    (UNIX) to add the full path of 
mycustom.jar or the
                      
customclasses directory to the end of the CLASSPATH definition.
- 
                        
On Windows, either:
- 
                            
                              set CLASSPATH=C:\work\custom\customclasses;%CLASSPATH%
                             
                            or:
                           
- 
                            
                              set CLASSPATH=C:\work\custom\customclasses\mycustom.jar;%CLASSPATH%
                             
                           
                       
                       
- 
                        
On UNIX, either:
- 
                            
                              CLASSPATH=/work/custom/customclasses:$CLASSPATH
                             
                            or:
                           
- 
                            
                              CLASSPATH=/work/custom/customclasses/mycustom.jar;$CLASSPATH