Proteus works with keil successfully

I built up my proteus environment yesterday.Story began yesterday afternoon when I heard by accident that there is a software named Proteus that can simulate C51 MCU.I was so exitted then because I have no MCU development kit,it would be a good idea to work on this soft platform.I searched Google,Out of my surprise,it even can work in conjunction with keil environment!It means I can debug my C51 programs,for keil,proteus works like a real board.What's more,it also support ARM processor.Can not wait any longer,I downloaded a crack version of proteus6.9 SP4 and keil,after installation,I thought there would be no problems,but I was wrong.When I load a sampler c51 calculator project in ISIS professional,at the same time I use keil to debug the sampler source code written in C,it showed my a error message said "Error target dll cancelled..."again and again.No measures could I take but turn my head to Google.From a Chinese proteus forum,I need another crack file-a crack prospice.dll file.I got this file from this forum site and replaced the same file located in the proteus installation directory Bin folder,finally keil worked with proteus perfect.I can debug my code,I can start the system on proteus.Actually,things were not that easy to be done like a described above.I spend whole my night to search the web,download crack files.After several failures,I made it!When the two systems works,it was nearly half past 23,I was left alone in the big laboratory.I turned off my computer,cut off lab's main power supply,locked the door,and run toward my dormitory...