If possible, before using reg hacks and so on, try to set your GPS port below 8. Go to Device Manager, find your GPS receiver COM port, double-click, go to properties (I think, I'm doing this by memory), find the place where you can adjust 2 sliders (UART 16550-related), there should be a box at the bottom of that dialog box where you can choose the COM port. See if you can set it to something REALLY low, like 2, 3, etc. If you can, iGuidance will stop messing around. I used to have this problem for like a year until I blew a fuse (in my head), posted a message here, and someone just said "drop the COM port"
