Hello, I have a question on updating a laptop that we are using. The current laptop I have is using windows xp with Rslogix500 version 6.20 and rslogix5000 version v20.04.00 (cpr 9 sr 5). Lately the laptop has been running slow and having comm issues. The usb ports get tied up and communication has been almost impossible with rslinx. I constantly have been getting that that device is not recognized and the only way i have been able to establish communication is to keep rebooting the computer to free up the comm ports. The computer takes about 15 mins. to reboot and load again. Anyway, I have got the go ahead to get a new laptop. My questions are what should i get and how much can i upgrade without having a bunch of headaches. My thought was to purchase a laptop with windows 7 but I am not sure what that would involve to do so. Is there a fee to upgrade versions? Is windows 7 the best operating system to upgrade to? Should i just get a computer with windows xp on it and leave everything the same? Any advice here would be much appreciated.