I have recently purchased graphtec fc4100-75 cutter, i couldnt get it to work with my mac so i bought a cheap pc with win xp, i bought 25 pin to 9 pin serial cable and 9 pin to usb cable with its own install disk. I hooked it all up, plugged it into one on my 6 usb ports, installed flexi 8.1. i made sure the ports match in device manager and production manager and all i get is write port error or cant open port. i have been searching around for anything and have played around with settings and still same thing happens, at some stage when i checked flow control it would say cutting...30%...then done but cutter did nothing. I did test cut on cutter, and it goes. i've seen the cutter work before i bought it. it was connected the same way, but used with old version of flexi. can anyone help, anyone had same problem. or can anyone tell me what settings and ports i should be using, i've been trying to get it to run for last 16hours straight, and just cant wrap my mind around it. any help plz....