Though i'm currently interested in internet explorer address space i wouldn't mind a general answer. The question is how can i calculate the address space ( and by address space a mean the minimum and maximum address in memory -correct me if i'm wrong- ) of a windows process. Actually is this space fixed or varied ? Also do i get to know the virtual or the physical address space , and if the one i get is the visual is it the mapping the same for every instance of the IE i open ? I do have a debugger ( ollydbg to be specific ) and i suppose i could get some information from it but i can't specify what and how. Please bear my lack of knowledge, thank you.