how to make C# application run on Win2000,WinMe and Win98?

Question

It seems we have to install the whole .net framwork before run c# application on WinXP.But even if I install the .net framwork 1.1 package on Win2000,my C# application still cannt run on it.Since C# is better than VC++,why the application developed with it has such a unbearable restriction? If we have to asked our users to install the .net framwork before run our application? or if there someother way to let our C# application run fluently on WinXP,Win2000,WinMe,Win98? Thanks momer