I use WebSphere 7 and I've set shared libraries as described in this example http://www-10.lotus.com/ldd/portalwiki.nsf/dx/06062009015816PMWEBP3Y.htm
My application is running with this setting, but I can't deploy it (update). At deploy it can't find the classes in the shared libraries. I don't have the error message right now because I had to revert the changes but maybe somebody knows what's missing from the example.
We edited the setupCmdLine.bat file and appended the path where our jars can be found to the classpath variables but i'm sure this is not the right way to do it :)