I am having a problem using the jconnect classes with Visual J++.

I get the errors:
C:\Program Files\DevStudio\samples\Sun\Isql\Isql.java(4,8) : error
J0051: Undefined package 'sql'
C:\Program Files\DevStudio\samples\Sun\Isql\Isql.java(5,8) : error
J0049: Undefined name 'jdbc.sybase.utils.Debug'
C:\Program Files\DevStudio\samples\Sun\Isql\Isql.java(6,8) : error
J0051: Undefined package 'jdbc'

on including the following imports:
import jdbc.sql.*;
import jdbc.sybase.utils.Debug; // Sybase internal debugging class
import jdbc.sybase.jdbc.*;

I am on Windows 95 and have the following in my autoexec.bat:
set JDBC_HOME=c:\Program Files\Sybase\jConnect
set JAVA_HOME=c:\jdk1.1.3
set CLASSPATH=%JDBC_HOME%\classes;%JAVA_HOME%\lib\classes.zip

Any help is appreciated

Gary