I have been running HRD with dual monitors for at least a year. I am using XP, Toshiba Dual-Core laptop with only 1/2 gig ram. I went to extended desk top. The main monitor show the HRD main control screen. The monitor plugged into the side of the laptop show either the logging screen...or if I am running DM780, the screen(s) for digital master. Kind of fun. Sometimes I will shrink down the main HRD screen to show the VFO A and B then the rest of the screen have QRZ.COM loaded so I can put the call sign in and get more info on who I have made contact on. This is my favorite configuration. I have had zero problems. ... Just remembered before I put the IC-7200 mobile (main rig is a IC-756proII) I had the 756 on one screen and the 7200 on the other. Also did the split screen where the main one on the laptop had both radios showing and the external monitor had my digital and log programs showing. Fun stuff... Hope this helps answer your question.