C# Signature:

[DllImport("advapi32.dll", SetLastError=true)]
static extern bool RevertToSelf();

VB Signature:

Declare Function RevertToSelf Lib "advapi32.dll" () As Integer

User-Defined Types:

None.

Notes:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/secauthz/security/reverttoself.asp

Tips & Tric

Alternative Managed API:

Do you know one? Please contribute it!