I'm interested, I'm a security paranoid, so I should not have an issue with the security aspect. I have worked with .Net application which interact with DLLs, even developed a proxy DLL to resolve a memory leak in one of the DLLs. I'm not a great designer, so I hope the design done can be fit without much changes. I would like though more specifics on the product. Typically the DLL would be on the server side, so not sure what it's doing on the client side, unless we're talking about a windows app, in which case, I'm not sure why we would need ASP.Net on the server side... More details would be appreciated, before providing final bid.