The second parameter required for System.Diagnostics.Process.Start() is a string, you are passing an array. Either pass the parameters concatonated to begin with, or use the string function to join the array.

Ex: System.Diagnostics.Process.Start(fullExename, parm1 & Space(1) & parm2);
Ex: System.Diagnostics.Process.Start(fullExename, String.Join(Space(1), arg));

The second way using the String.Join() method will allow you to pass however many parameters you need.

>Hi
>I am getting very confused,
>I want to start and exe with two parameters
>
>From the main app i have
>
>

>  string[] arg=  {parm1,parm2};
>  System.Diagnostics.Process.Start(fullExename,arg);
>

>
>but i get the error "cannot convert string[] to string"
>hows do I pass more then one parameter to an exe?
>
>once again TIA
>Stuart