thanx friend...i think that would be good enough as it is equally as famous as Windows OS in my country..

then can someone guide me to do the start up. I know some Assembly programming and C, but have no idea of how to make it work with system programs....

I thing Microsoft Vista is designed in C#, isn't it?

Can someone demostrate with a tutorial thru which the Operating System could be developed in C#, i have no idea in System programming in C#. Also tell if the same could be done in other langauges...