NSIS/Contrib/UserInfo/UserInfo.nsi

Name "UserInfo.dll test"
OutFile UserInfo.exe

Section
	ClearErrors
	UserInfo::GetName
	IfErrors Win9x
	Pop $0
	UserInfo::GetAccountType
	Pop $1
	StrCmp $1 "Admin" 0 +3
		MessageBox MB_OK 'User "$0" is in the Administrators group'
		Goto done
	StrCmp $1 "Power" 0 +3
		MessageBox MB_OK 'User "$0" is in the Power Users group'
		Goto done
	StrCmp $1 "User" 0 +3
		MessageBox MB_OK 'User "$0" is just a regular user'
		Goto done
	StrCmp $1 "Guest" 0 +3
		MessageBox MB_OK 'User "$0" is a guest'
		Goto done
	MessageBox MB_OK "Unknown error"
	Goto done

	Win9x:
		# This one means you don't need to care about admin or
		# not admin because Windows 9x doesn't either
		MessageBox MB_OK "Error! This DLL can't run under Windows 9x!"

	done:
SectionEnd