The instructions above are quite hard to follow. Also, I do not know how to make shortcuts too. A third factor is that overall, I am not very good at these type of things. Question: Is there one that I could have please? 
Sorry i don't know how to put it simpler... I'll try to let you create a .bat:
- Take note of the path where you "installed" simutrans (=where simutrans.exe is located on your hard drive, e.g. c:\users\fam621\simutrans)
- Create a new empty file on your desktop (right button -> create .txt file or something similar)
- Open that file with a text editor (notepad is ok)
- Write following line inside the file:
c:\users\fam621\simutrans\simutrans.exe -server 54545
- This will open a simutrans server on port 54545, you can change the port number according to your needs
- Save the file and rename it with .bat extension (replace .txt by .bat)
- Double click and run the file
- Maybe when it starts, windows will prompt that a program is trying to open a port blocked by windows firewall: click the option to allow simutrans.exe bypass firewall