I want to work within a dual screen. My current LCD is Gateway FPD1530. The resolution read within my computer is 1024x768 which I found a ViewSonic VA503B 15-inch LCD Monitor to incorporate as my dual screen. I don't want to throw my money away and need to know do I upgrade my graphics card to allow a greater resolution ratio, or remain with the resolution as specified? I am picking up an external hard drive with 4 bays to safeguard against loosing all of my files. Can I upgrade to a 24-inch LCD?