SAP GUI 7.20 - sapmsg.ini and saproute.ini location

I have installed SAP GUI 7.20 and I moved the saplogon.ini to a folder different from C:\WINDWOS, but message server and SAProuter are still pointing to C:\WINDOWS\SAPMSG.INI and C:\WINDWOS\SAPROUTE.INI.

I don't like these files on WINDOWS, How can I move them to another location and SAP GUI still can read them?

Many Thanks in advance,

Fernando.