How to work with processStartInfo to send quota in .net

Question

i am writing this utilitie for set quota, and it work fine, i am using the processStartInfo
the question is went i run the application it set the quota but this is a black screen that the dirquota is running in, how can i my that screen hide or something. i setup everything right , think. also i am running under a another context.
qta.RedirectStandardInput = true;
qta.RedirectStandardError = true;
qta.RedirectStandardOutput = true;
qta.UseShellExecute = false;
qta.CreateNoWindow = false;