This is discussed in many other threads in this forum.
Please see http://appdeveloper.intel.com/en-us/node/554
Intel® Atom™ Developer Program
Yah you Can use .Net Components by giving VS2008 to develop new applications. Thats more than enough.
please separate between what is technically possible and what the IADP currently supports.
If you submit software which needs the .NET Runtime you might not pass validation.
Officially supported is only pure C/C++ software.