Is there any way to manually set the affinity for a game to 1 core before running a game ? instead of having to alt tab out to the task manager as some games really don't like it when you do that.
I've been searching around on the interent and there are a few programs mentioned which allow you to manually set them Permentatly but so far all the links have been dead-ends.

imagecfg
Give it a Google.

check out this . imagecfg is great (when it works), but the suggestion in the first post [url=http://www.koma-code.de/index.php?option=com_content&task=view&id=88&Itemid=93]cpu-control which doesn't change the executable.
It has helped me with Sacred Gold" which runs a bit smoother. I am also fooling with limiting the affinity to 2 cpu's for Fallout 3. I have a quad core.

Thanks. This one looks really good has anyone tried it yet ?

works wonderfully, i just have to remember to keep it running in the background, i always forget that..

Excellent, very simple to use. Apache Havoc seems to run a lot better with it.

You can have this happen automatically by creating a batch file.
First, open Notepad. Enter the paths of the files you want to launch, one on each line, in the order you want them to run. Any file name that has spaces needs to be enclosed in quotation marks. If a program has parameters you can include them at the end (after the quotation marks, if any) just like with a shortcut. Here is an example:
C:\Fraps\Fraps.exe
"C:\Program Files\DOSBox\DOSBox.exe" -noconsole
When you save it, enter whatever file name you like but put the .bat extension at the end and enclose the entire filename in quotation marks (otherwise Notepad will force the .txt extension and the batch file will not be executable).
Next, go to the properties of the shortcut you use to launch that game and change it to point to the batch file. Running this shortcut will now execute all the commands you have entered. A command line window will also have opened, but it will close automatically when you close the programs it opened.

Good grief? Quad core? I remember when we had one processor and we thought ourselves lucky!
XD

thanks i'll try it out.