I know this has been discussed before but I can't find the details. I have been using FMS on a Win98SE system with both serial and parallel ports and it works fine with my Futaba transmitters. The graphics card is better on my newly built WinXP system and I can get FMS to load but the serial and parallel interfaces don't enable. I'm using FMS Beta 7.0 What difference does FMS Alpha 7.5.1 make ?? What is the problem with WinXP? Is it because the XP HDD is NOT set up with the FAT32 files like Win98SE ? ....or what ? The parallel port is set up as ECP in both.