I currently have xp64 8 gigs 8800gt 6400 amd and Tactics or Brotherhood of Steel plays find on my system. So I was wandering if there a possibility to upgrade the old ones so that they can also be played on a system like mine??????

To play older games better is to download dos-box or virtual machines like VMware. the best movie in the world ;P http://pl.youtube.com/watch?v=6BV4slil-HQ