How to use pySerial under Windows 7 without administrator rights

[furoscame]

Hello together,

currently I try to use pySerial under Windows 7. But it is not possible 
to open a serial port without running the script under adminstrator 
rights. Other programs like Terraterm are able to so without 
adminstrator rights. What is the reason for that and is it possible open 
a port without administrator rights in Python?

regards furoscame