4. Add repository server "http://www.ibm.com/software/repositorymanager/V8WASBASETrial".
5. Then click the install button, the IBM install manager will find the WAS 8.0.
6.Please check the WAS 8.0 and uncheck all patches. (According to my test, currently, we cannot download the patch file, and the failing of download will stop the process of WAS installing.)