Itake a IDEA without jre

I had to take JDK 5.0 and IDEA 5.0 by a U disk which has only 108M to another city. So I had to delete the jre subdirectory of IDEA installed, compress the others contents? Then I get a file IDEA.rar only 35M size. So my U disk is enough to take them both. Suggest you release a version without JRE, because there almost always is jre installed before. And I want to know, how to specify the JRE path for IDEA 5.0 in windows? now I copy the jre to IDEA's install directory and copy tools.jar to it.