Webrequest "DELETE" function without DLL

Default WebRequest function supports only GET and POST functions and I need it to support DELETE.

I have a solution that lets me use WebRequest that uses 2 dlls - Wininet.dll and kernel32.dll.
I want to create a product for the market that needs this DELETE function, but Market products disallow using DLLs.

My current idea is to setup a webrequest for a php script that will forward this taks to my own mysql application on my own server to execute such commands, but that will cause a delay and will make it dependent on the server stability.

If you think you can program such function without using external DLLs, according to the Market rules, please submit your application. I will send you current solution's source code that works which you can relate to with your modifications.