>>Imagine writing an app that shares a table and processes a lot of math calcs.
>>Compile it and name it appA
>>Compile it again and name it appB
>>appA uses the top half of the table
>>appB uses the bottom half of the table
>>Run them both at the same time
>>Will the apps take advantage of the dual core?
>
>In general it is not the App that decides which processor or core to use or run on -- it is the job of the OS. In the case of windows, I am not sure how good it is at load balancing between multiple processors or cores. The Enterprise Server edition will be better, but I suspect you are using WinXP Pro or one of the Vista flavors and these I am not sure how good they are at balancing.

Yes, it's vista ultimate running on an athlon 4400+ 64X2 cpu