Which platform (Windows, Linux, Unix,...)?
If you didn't get it with your trial software, you can download the Java based GUI here:
You also can download the installation media from SAP Service Marketplace (needs valid logon):
http://service.sap.com/swdc -> Download -> Installations and Upgrades -> Entry by Application Group -> SAP Frontend Components.
I have vista ultimate installed, I can install gui6.4, but everytime when I clicked into awb menu(administrator,transformation....) it just crashed. I installed patch23 for ie7, did not make any difference? you know where I can download gui7.0,it might fix my issue, just a guess.....