Yes, E&T can be installed and used as portable app on a memory stick. This allows the use of the program on multiple computers without (as previously required) copying the file Userdata.mdb. You do not even have to install it on the other computers! There is only one exception: the database components ("MDAC") by Microsoft must be present on the computer on which you want to run E&T. They are usually installed by default on newer computers (Windows 2000 and above). If necessary, you can install MDAC on older computers at any time. Please check the information at Downloads / database components on this website..

To use E&T as portable app, please follow our guidelines for "Installation and use on a memory stick"

This problem occurs with displays that have non-quadratic pixels. Solution: Edit an entry in ET.INI to stretch the stars in the vertical axis. You need to change the key called "AspectRatio" in the section "[Miscellaneous]". Simply insert the factor by which the stars must be stretched vertically to be displayed as circles. On a 16:9-display this is approximately 1.1

The entry in ET.ini should look like this
[Miscellaneous]
AspectRatio=1.1

The easiest way is to use an external DVD drive.
If you have access to a computer with DVD drive, you can copy the complete content of the DVD onto a USB memory stick (with at least 4 GB free of memory) and install from the USB stick. If you don't have a USB stick with enough memory, you can copy as first step all data from DVD onto it, but exclude the folder "images". Now start the installation (run SETUP.EXE). Choose as setup type the option "Standard (without images)". When the installation is complete, you can copy the image files from the DVD to the sub-directory "images" on your hard-drive.