Does anybody know of a RestClient that exists that can be used for Visual Basic 6?

I am able to utilise the RestSharp .dll (http://restsharp.org/) in VB.Net to do what I want it to, but ideally I need to perform the task in an existing VB6 application.

I need to "AddHeader" and "AddParameter" to my RestRequest, the "AddParameter" will include authentication details such as an API Key / Secret / Reference