System Service access to another process

Can a system service access the heap of another process and read and write directly or indirectly to that memory? If so, how?

I am writing a a maths library and I want it to run as a system service, but I need a fast way to pass the data to and from the service.

You can use shared memory as an IPC mechanism.

http://msdn2.microsoft.com/en-us/lib...51(VS.85).aspx

gg

Thanks codeplug, that is exactly what I am looking for :)