Report Manager since version 2.0 allow the use of component library from any .Net enabled environment like Visual Studio.Net or Borland C# Builder.Net. This environments also supports ActiveX so you can use the ActiveX component.
This are the steps to use Report Manager native components inside Visual Studio.Net.
1.Download the .Net package from sourceforge, then uncompress the package to a directory in your computer.
http://sourceforge.net/projects/reportman
2.At your project select add reference, and select ReportMan.dll, and Borland.VCLRtl.dll
3.At the unit you want to use a report, add rpvclreport to using list clause at the top of the source code:
using rpvclreport;
4. Write the following code to execute a report:
TVCLReport areport=new TVCLReport(this);
Environment.CurrentDirectory="c:\\Progam Files\\Report Manager\\";
areport.Filename="sample4.rep";
areport.Execute();