Possible to delegate a Kerberos ticket from a .NET application?

Hi,
I just wonder if there?re any possibilities to delegate a Kerberos ticket from a .NET application (with a logged on domain user) WITHOUT setting the web server as ?trust this computer for delegation? in Active Directory?
My scenario is that I want to change values in Active Directory through my .NET application and the only possible way to do this right now is that I have to set the web server as ?trust this computer for delegation? and impersonate the current user like this:
IPrincipal principalUser = this.User;
WindowsIdentity wi = (WindowsIdentity)principalUser.Identity;
WindowsImpersonationContext wic = wi.Impersonate();
Thanks a log folks.
Regards,
Jonas
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