Nokia M2M Application Development Kit 2.1 includes Nokia M2M Gateway Trial Version.
Read carefully installation document "Installation Guide for Nokia M2M Application Development Kit v4.1 (Installation_Guide_for_Nokia_M2M_ADK_v4_1.pdf)" before you install Nokia M2M Application Development Kit 2.1.
link where you can find installation guide:
Recommended JacORB version is 1.3.30
Recommended Java version is Sun's java version 1.3.1
If you have problems you could check Troubleshooting section from page 14 from the installation guide. If you can find answer to your problems don't hesitate to ask.
Nokia M2M Developer Support Team