The BIRT driver has been updated and now it can work on Eclipse 3.7. In addition, the plugin doesn't contain a specific version of ObjectDB anymore, so it will be able to use any ObjectDB version, starting build 2.3.7_02.
To install the BIRT driver in Eclipse - follow the ObjectDB-BIRT tutorial (if you use Eclipse 3.7 you will have to specify the following update site - http://download.eclipse.org/birt/update-site/3.7).
The driver (as 2 Eclipse bundles) is also attached, so you can just drop the last objectdb.jar file and the two attached jar files in your Eclipse plugins directory and restart.
ObjectDB - Fast Object Database for Java (JPA/JDO)