You can make a bootable flash - there is a link to Shawn's tut at the bottom of this tut already. Make bootable iso from student d/l
Not everyone can boot from usb - or wants to go buy a 4gb stick.
If you read the above tut, and the thread - you will see that error is because after creating the expandedsetup folder - the setup tries to run - if it is 64 bit on a 32 bit system - you get that error.
The expandedsetup folder is fine and can be made into bootable .iso as per the tutorial.
If you can make a bootable dvd from the installation files using imgburn - that actually loads - show me how.