Originally posted by: DocRorlach No - it is not the graphics card per se, although overclocking a G-card can cause crashes. If you are on a dual core & vista, you need to repack the exe to assign affinity to a core, and change your short-cut to set the priority permanently to high. Instructions can be found here.quote> When i tried step one of the guide it just kept saying IMAGECFG: unable to map and load SimCity 4.exe, i know i typed in the command right, i tried it about ten times to be sure , firstly, what does it mean and secondly, how could i get it to work