Installing virtual network adapter without GUI/VPNCMGR?

[TheDragster]

As the title, I need to know how to install the network adapter without running the GUI and creating it on the GUI.
Example :
I need that if I run a program(if possible in C# with code), it automatically installs the VPN adapter with name : VPN.
I already tried devcon with neo_x86.inf, .sys and the file inf.cat but it didn't worked, it says "Failed" or something like that.

Could you help me?
Thanks.

[TheDragster]

Answer plese!!

[kh_tsang]

You can try to use vpncmd.

[TheDragster]

VPNCMD hasn't the function to install an adapter

[TheDragster]

kh_tsang wrote:
> You can try to use vpncmd.
VPNCMD hasn't the function to install an adapter

[thisjun]

There is the command.
http://www.softether.org/4-docs/1-manua ... rk_Adapter

However, a installing popup will be shown.