Hi Pete 
  
thank you for your timely response. 
  
Win 8.1 may support serial ports - Com but they have removed any reference in Device Mgr or Computer management. 
  
have not entered a port into ini because I cannot find any reference to any specific name. 
  
I have tried using Com 1, 2, 3, etc. within the GPSout  but nothing comes back...  The program I am working with is FSXFlight and it works perfectly with my Win 7 box... The GPSout for win 7 shows a Com3 connection. 
  
I am also trying to get in touch with the developer of the App ( who has posted to this forum) to see if he might have run into 8.1 issues.   Continue to scour all the likely forums to see if anyone else might have a workaround. 
  
thanks again 
  
Greg