Buhsman you left out some details, does this XP laptop have its own serial port built in OR are you attempting to use a USB adapter? Its not easy (if it can be done at all) to make an AB 1747-PIC to work this way. You need to upgrade to RSLinx 2.30.00 or higher and for XP your RSLogix has to be 5.20.00 or higher.
If the laptop doesnt have its own built in serial port you may be better off trying a PCMCIA to serial adapter but I ended up obtaining the PCMK card.
If you do a search on this site you will find several threads related to this.
I just noticed that you answered in another thread about installing version 4.10.00, yes it will install but it isnt fully compatible as you are seeing. You also lose any patches/updates the newer versions offer. See if you can purchase the support contract if that will allow you to update version 5.00.00 which should help alot.