Planets 4 on a memory stick
Copy the complete Planets4 directory installed on your PC to a USB key. You you will still some files (DLL, OCX) for planets4 to work properly. Once those missing files are copied onto your USB key it will work.
 How to
Download planets4dll&ocxfiles.zip (7.184 KB, from Arlyos)
Put all files in both main planets4 and planets4/vpsys directories.
Get "regsvr32" just in case you need to activate a couple of the ocx/dll files. e.g. activating sound. If you need to activate the sound just drag and drop the ocx/dll files onto the regsvr32 file.
You can improve the game performance by copying the content of the USB key to a temp directory on your C: drive of the computer you are using (like C:\Temp), you can delete the files when you are done.
I would recommend copying the entire planets directory back to your USB after the first play and every time after that just the war and plans directories back from C: drive to your planets flash drive directory to always keep your data current. <arylos>