Send command to 2 User on 1PC

[GreenHorn]

Hy,

I use HotekeyNet to Manage my 7 LotrO Clients.
at this Moment its works. i open all on the same user of my machine. in future this dosnt works.
So i try to start 1 Lotro on my Adminkonto from Win7 and the other on their own userkonto on my machine (7xLotro=7 WinUser)
But i have the problem that all use the same IP from the Machine.

Now i need a "command" to send to the other Win7User

(sorry for my tereble English)