(sorry if i repeated a thread, just post this in case someone in same situation as me). I use TradeStation 8.3 on an old Dell Dimension 8250, which is Pentium 4 with 2.66GHz CPU and 512MB memory, and running Windows XP Pro. I haven't upgraded this desktop "yet", because it's working fine for my purpose and I don't run much indicators/analyses on charts or RadarScreen. Basically a simple single software trading station for two 20" monitors. I chose to spend money buying a new notebook during this time. I wonder if a brand new Dell PC with Vista pre-loaded will make any significant improvement in performance compared to my dinosaur Pentium 4. I suppose a new Core 2 Duo processor with enough 2GB (or 3GB) memory will give my TradeStation platform a huge hardware boost, if I select only the Vista Basic? Since I cannot pre-configure XP from Dell, is Windows Vista Home Basic the right choice for minimal graphics-processor-intensive OS? I was also advised not to install my existing Norton Internet Security 2008 when i buy the new PC, as it will slow down my TradeStation datafeed/charts. But with the new hardware, TradeStation 8.3 and Norton Internet Security 2008 should co-exist well right? My family already paid for the Norton license for two yrs and it actually can be installed on multiple PCs in the family.