Welcom to the forum
No i don't tink so double your memory and new graphic card needed and here you find newest drivere to your graphc card
http://downloadcenter.intel.com/filter_results.aspx?strTypes=all&ProductID=2301&OSFullName=Windows*+XP+Professional&lang=eng&strOSs=44&submit=Go%21 (http://downloadcenter.intel.com/filter_results.aspx?strTypes=all&ProductID=2301&OSFullName=Windows*+XP+Professional&lang=eng&strOSs=44&submit=Go%21)
Read this post maybe that can help you litle
http://www.shipsim.com/ShipSimForum/index.php/topic,5842.0.html
Here are the system requirements for ship simulator 2008
Operating system: Windows 2000, XP or Vista
Processor: Pentium 4 2.4GHz or AMD equivalent
Memory: 1GB (Windows 2000/XP) or 2GB (Vista)
Graphics card: GeForce 5900 or ATI 9600 Pro / X600 (128MB)
Audio devices: Sound card
Input controller: Mouse with scroll wheel
Optional controllers: Joystick, Joypad or Steering wheel