wodFtpDLX.NET is working only under NET 2.0 framework because there are some SSL related classes added in NET 2.0 framework which are neccessary for wodFtpDLX.NET to work correctly.
If you develop using NET1.0/NET1.1 framework, we suggest you use wodFtpDLX ActiveX component, or perhaps wodSFTP.NET instead.
wodFtpDLX ActiveX component will work in NET environment. You should add reference through VS and use it just like any other NET component.