JCo 2.0 is available with SAP Basis Release 6.20. JCo 2.0 does not support JDK 1.1
anymore, but requires Java 2 (JDK 1.2 and later).
Create a directory, e.g., c:\JCo, and unzip the JCo zip file to that directory, keeping
the directory structure intact.
Copy the librfc32.dll file from your JCo root directory to
C:\WINNT\SYSTEM32 unless the version you already have there is newer than the
one supplied with JCo.
Make sure that sapjco.jar (found in your JCo root directory) is in the class path
of any project that wants to use JCo.