Is there any kind of third party library for making API calls

I am looking for some kind of third-party library or wrapper (free or purchase) that I can use to make it easier to write code for calling Win API functions, with VB keywords or some such, rather than the limited functions available via .Net classes (although a class lib would be great if it was much more comprehensive than the .Net classes available just for common tasks like messages etc.).

What I want is something similar to what you get in PowerBasic or PureBasic, where you can just use a sort of keyword with parameters to call a Win API function, rather than directly looking up and using the API functions that Windows offers, which are very complex.

Any suggestions (other than spending a lot of time writing my own class :=) )?

Thanks

Pete B