Generating My own RC4.key

[Uranium]

I'm making a program that uses PHP scripts to connect two visualbasic.net programs that can queue up clients for connecting to me (client side uses single-click). I want a key for each client.

I've messed with the crypt service providers in VB.net, no luck

i've messed with PHP's pack() to try to make a binary file (87 bytes total, with 128 bitL at the beginning), but every file I try to use dosen't make any connection

Can someone give me an idea of how to go about this? or better yet, make an command-line exe to quickly do it