Windows may be up to date, but is your video card driver up to date? If not, go to the website for the card, get the latest version and install.
After doing that, reinstall the .Net framework 1.1 ... then the .Net framework 2.0. Reboot your computer after doing this. THEN install Dual Client. I don't remember if you are instructed to reboot after installing the .Net framework or not, but I have found it to be useful after installing a program of this nature. Remember also, if you are going to use Decal, install Decal AFTER installing the .Net framework, or it will not function properly
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